Added new Kusto ServiceLayer (#1009)

* Copy smoModel some rename

* Copy entire service layer

* Building copy

* Fixing some references

* Launch profile

* Resolve namespace issues

* Compiling tests. Correct manifest.

* Fixing localization resources

* ReliableKustoClient

* Some trimming of extra code and Kusto code

* Kusto client creation in bindingContent

* Removing Smo and new Kusto classes

* More trimming

* Kusto schema hookup

* Solidying DataSource abstraction

* Solidifying further

* Latest refatoring

* More refactoring

* Building and launching Kusto service layer

* Working model which enumerates databases

* Refactoring to pass IDataSource to all tree nodes

* Removing some dependencies on the context

* Working with tables and schema

* Comment checkin

* Refactoring to give out select script

* Query created and sent back to ADS

* Fix query generation

* Fix listing of databases

* Tunneling the query through.

* Successful query execution

* Return only results table

* Deleting Cms

* Delete DacFx

* Delete SchemaCompare and TaskServices

* Change build definition to not stop at launch

* Fix error after merge

* Save Kusto results in different formats (#935)

* save results as csv etc

* some fixes

Co-authored-by: Monica Gupta <mogupt@microsoft.com>

* 2407 Added OrderBy clause in KustoDataSource > GetDatabaseMetaData and GetColumnMetadata (#959)

* 2405 Defaulted Options when setting ServerInfo in ConnectionService > GetConnectionCompleteParams (#965)

* 2747 Fixed IsUnknownType error for Kusto (#989)

* 2747 Removed unused directives in Kusto > DbColumnWrapper. Refactored IsUnknownType to handle null DataTypeName

* 2747 Reverted IsUnknownType change in DbColumnWrapper. Changed DataTypeName to get calue from ColumnType. Refactored SafeGetValue to type check before hard casting to reduce case exceptions.

* Added EmbeddedResourceUseDependentUponConvention to Microsoft.Kusto.ServiceLayer.csproj. Also renamed DACfx to match Microsoft.SqlTools.ServiceLayer. Added to compile Exclude="**/obj/**/*.cs"

* Srahman cleanup sql code (#992)

* Removed Management and Security Service Code.

* Remove FileBrowser service

* Comment why we are using SqlServer library

* Remove SQL specific type definitions

* clean up formatter service (#996)

Co-authored-by: Monica Gupta <mogupt@microsoft.com>

* Code clean up and Kusto intellisense (#994)

* Code clean up and Kusto intellisense

* Addressed few comments

* Addressed few comments

* addressed comments

Co-authored-by: Monica Gupta <mogupt@microsoft.com>

* Return multiple tables for Kusto

* Changes required for Kusto manage dashboard (#1039)

* Changes required for manage dashboard

* Addressed comments

Co-authored-by: Monica Gupta <mogupt@microsoft.com>

* 2728 Kusto function support (#1038)

* loc update (#914)

* loc update

* loc updates

* 2728 moved ColumnInfo and KustoResultsReader to separate files. Added Folder and Function to TreeNode.cs

* 2728 Added FunctionInfo. Added Folder to ColumnInfo. Removed partial class from KustoResultsReader. Set Function.IsAlwaysLeaf=true in TreeNode.cs. In KustoDataSource changed tableMetadata type to TableMetaData. Added folder and function dictionaries. Refactored GetSchema function. Renamed GenerateColumnMetadataKey to GenerateMetadataKey

* 2728 Added FunctionInfo. Added Folder to ColumnInfo. Removed partial class from KustoResultsReader. Set Function.IsAlwaysLeaf=true in TreeNode.cs. In KustoDataSource changed tableMetadata type to TableMetaData. Added folder and function dictionaries. Refactored GetSchema function. Renamed GenerateColumnMetadataKey to GenerateMetadataKey

* 2728 Created new SqlConnection within using block. Refactored KustoDataSource > columnmetadata to sort on get instead of insert.

* 2728 Added GetFunctionInfo function to KustoDataSource.

* 2728 Reverted change to Microsoft.Kusto.ServiceLayer.csproj from merge

* 2728 Reverted change to SqlTools.ServiceLayer\Localization\transXliff

* 2728 Reverted change to sr.de.xlf and sr.zh-hans.xlf

* 2728 Refactored KustoDataSource Function folders to support subfolders

* 2728 Refactored KustoDataSource to use urn for folders, functions, and tables instead of name.

* Merge remote-tracking branch 'origin/main' into feature-ADE

# Conflicts:
#	Packages.props

* 2728 Moved metadata files into Metadata subdirectory. Added GenerateAlterFunction to IDataSource and DataSourceBase.

* 2728 Added summary information to SafeAdd in SystemExtensions. Renamed local variable in SetTableMetadata

* 2728 Moved SafeAdd from SystemExtensions to KustoQueryUtils. Added check when getting database schema to return existing records before querying again. Added AddRange function to KustoQueryUtils. Created SetFolderMetadataForFunctions method.

* 2728 Added DatabaseKeyPrefix to only return tables to a database for the dashboard. Added logic to store all database tables within the tableMetadata dictionary for the dashboard.

* 2728 Created TableInfo and moved info objects into Models directory. Refactored KustoDataSource to lazy load columns for tables. Refactored logic to load tables using cslschema instead of schema.

* 2728 Renamed LoadColumnSchema to GetTableSchema to be consistent.

Co-authored-by: khoiph1 <khoiph@microsoft.com>

* Addressed comments

Co-authored-by: Shafiq Rahman <srahman@microsoft.com>
Co-authored-by: Monica Gupta <mogupt@microsoft.com>
Co-authored-by: Justin M <63619224+JustinMDotNet@users.noreply.github.com>
Co-authored-by: rkselfhost <rkselfhost@outlook.com>
Co-authored-by: khoiph1 <khoiph@microsoft.com>

src/Microsoft.Kusto.ServiceLayer/DataSource/Metadata/DatabaseMetadata.cs

@@ -0,0 +1,10 @@
+namespace Microsoft.Kusto.ServiceLayer.DataSource.Metadata
+{
+    /// <summary>
+    /// Database metadata information
+    /// </summary>
+    public class DatabaseMetadata : DataSourceObjectMetadata
+    {
+        public string ClusterName { get; set; }
+    }
+}