Fix #4356 New Notebook from connection doesn't connect (#4364)

* Fix #4356 New Notebook from connection doesn't connect
Fix new notebook error by passing profile instead of ID.
- I could've just sent the ID over, but this fix sets the stage for disconnected connections to work (since we have enough info to properly connect).
- There's a bug in NotebookModel blocking the disconnected connection part working, but Yurong's in progress fixes will unblock this. Hence checking in as-is and working to properly unblock once that's in.

* Support connection profile in commandline service
- Added new context API for things that want to work on commandline and object explorer
- Refactored commandlineservice slightly to be async & have a simpler execution flow (far fewer if/else statements)

* Fix unit tests
- Fixed 2 issues raised by tests (sholdn't do new query if no profile passed, shouldn't error on new query failing)
- Updated unit tests to pass as expected given changes to the APIs.

src/sql/parts/notebook/notebookInput.ts

@@ -27,6 +27,7 @@ import { IUntitledEditorService } from 'vs/workbench/services/untitled/common/un
 import { notebookModeId } from 'sql/common/constants';
 import { ITextFileService, ISaveOptions } from 'vs/workbench/services/textfile/common/textfiles';
 import { LocalContentManager } from 'sql/workbench/services/notebook/node/localContentManager';
+import { IConnectionProfile } from 'sql/platform/connection/common/interfaces';
 
 export type ModeViewSaveHandler = (handle: number) => Thenable<boolean>;
 
@@ -128,7 +129,7 @@ export class NotebookInput extends EditorInput {
 	private _providerId: string;
 	private _providers: string[];
 	private _standardKernels: IStandardKernelWithProvider[];
-	private _connectionProfileId: string;
+	private _connectionProfile: IConnectionProfile;
 	private _defaultKernel: azdata.nb.IKernelSpec;
 	private _isTrusted: boolean = false;
 	public hasBootstrapped = false;
@@ -191,12 +192,12 @@ export class NotebookInput extends EditorInput {
 		this._isTrusted = value;
 	}
 
-	public set connectionProfileId(value: string) {
-		this._connectionProfileId = value;
+	public set connectionProfile(value: IConnectionProfile) {
+		this._connectionProfile = value;
 	}
 
-	public get connectionProfileId(): string {
-		return this._connectionProfileId;
+	public get connectionProfile(): IConnectionProfile {
+		return this._connectionProfile;
 	}
 
 	public get standardKernels(): IStandardKernelWithProvider[] {