Initial Profiler extension scaffolding (#1451)

* Copy agent to profiler extension

* A few mote edits

extensions/profiler/README.md

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+# SQL Server Profiler for SQL Operations Studio
+
+Welcome to the SQL Server Profiler for SQL Operations Studio!  The SQL Server Profiler extension provides a simple SQL Server tracing solution similar to SSMS Profiler except built using XEvents.  SSMS Profiler is very easy to use and has good default values for the most common tracing configurations.  The UX is optimized for browsing through events and viewing the associated T-SQL text.  The SQL Server Profiler for SQL Operations Studio also assumes good default values for collecting T-SQL execution activities with an easy to use UX.
+
+Common SQL Profiler use-cases taken from https://docs.microsoft.com/en-us/sql/tools/sql-server-profiler/sql-server-profiler.
+
+- Stepping through problem queries to find the cause of the problem.
+- Finding and diagnosing slow-running queries.
+- Capturing the series of Transact-SQL statements that lead to a problem.
+- Monitoring the performance of SQL Server to tune workloads.
+- Correlating performance counters to diagnose problems.
+
+## Code of Conduct
+
+This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/). For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any additional questions or comments.
+
+## Privacy Statement
+
+The [Microsoft Enterprise and Developer Privacy Statement](https://privacy.microsoft.com/en-us/privacystatement) describes the privacy statement of this software.
+
+## License
+
+Copyright (c) Microsoft Corporation. All rights reserved.
+
+Licensed under the [Source EULA](https://raw.githubusercontent.com/Microsoft/sqlopsstudio/master/LICENSE.txt).