Add news for LS fixes (#2372)

* LS symbol providers

* Different ready wait

* Upgrade dependencies to latest LS

* Make open files only default

* Turn off hash checks

* Fix double progress display

* Update packages

* Anchor dependencies

* Add setting for diag throttling

* Add MacOS version check

* News

* Correct MacOS check and lay infra for Linux checks

* Linux version check

* Linux check

* Simplify

* Test prep

* Platform tests

* Mac compat tests

* Ubuntu tests

* Revert "Ubuntu tests"

This reverts commit c63c904.

* Revert "Mac compat tests"

This reverts commit cd970be.

* Revert "Platform tests"

This reverts commit 07dc2fa.

* Revert "Test prep"

This reverts commit 2c7243c.

* Revert "Simplify"

This reverts commit fef0e92.

* Revert "Linux check"

This reverts commit 925f663.

* Revert "Linux version check"

This reverts commit 0d3c066.

* Revert "Correct MacOS check and lay infra for Linux checks"

This reverts commit 4e12b3c.

* Revert "News"

This reverts commit 462ff7c.

* Revert "Add MacOS version check"

This reverts commit 70b13f7.

* News

* Format

* Undo

* Pass async startup option to LS

* News for LS fixes

* News for LS fixes

* Remove issue that is not fixed

* Add news

news/2 Fixes/2017.md

@@ -0,0 +1 @@
+Fix null reference exception in the language server causing server initialization to fail. The exception happened when search paths contained a folder that did not exist.

news/2 Fixes/2050.md

@@ -0,0 +1 @@
+Language server now populates document outline with all symbols instead of just top-level ones.

news/2 Fixes/2179.md

@@ -0,0 +1 @@
+Fixed issue in the language server when documentation for a function always produced "Documentation is still being calculated, please try again soon".

news/2 Fixes/2262.md

@@ -0,0 +1 @@
+Fixed issue in the language server when typing dot under certain conditions produced null reference exception.

src/client/activation/languageServer.ts

@@ -262,7 +262,8 @@ export class LanguageServerExtensionActivator implements IExtensionActivator {
                 excludeFiles: this.excludedFiles,
                 testEnvironment: isTestExecution(),
                 analysisUpdates: true,
-                traceLogging
+                traceLogging,
+                asyncStartup: true
             },
             middleware: {
                 provideCompletionItem: (document: TextDocument, position: Position, context: CompletionContext, token: CancellationToken, next: ProvideCompletionItemsSignature) => {