Docs: adding first version of the auto-generated packages API docs. (#22107)

* trying out api-extractor.

* works with our setup of build.

* wip.

* changed the packages so it works better with the api-extractor.

* Changes to make the api-extractor to work.

* cleaned up the api-extractor config files.

* added some more documentation.

* added tsdoc-metadata to gitignore.

* removed the generated docs (will do that in another PR).

* added execute permission to script for generating dosc.

* added so we will push generated docs to branch.

* will clean packages_api on abort.

* Fixed failing tests.

* fixed formatting issue with typedoc comment.

* temporarily disabled tslint rules about namespace until https://github.com/microsoft/rushstack/issues/1029 is resolved

* temporary enabled bable namespaces.

* updated build script.

* updated script.

* updated script with some colors.

* changed to camelCase.

* removed spacing.

* Starting to add documentation guidelines.

* added examples headline.

* added menu options.

* added parameters and return values.

* Fixed merge error.

* Added first version of auto-generated docs.

* changed so we use the eslint ignore syntax.

* changed to correct eslint ingnore comment.

* fixed some spelling errors reported by codespell.

* added script to generate docs in current folder.

* updated api docs.

* lerna bootstrap.

* added eror to the ingore words list.

* removed file that should be ignored.

* updated locKFILE.

* referenced the code comments guidelines.

* updated packages.

* updated deps.

* updated the autogenerated dosc.

* adding missing new line.

docs/sources/packages_api/data/datasourcepluginmeta.md

@@ -0,0 +1,125 @@
++++
+# -----------------------------------------------------------------------
+# Do not edit this file. It is automatically generated by API Documenter.
+# -----------------------------------------------------------------------
+title = "DataSourcePluginMeta"
+keywords = ["grafana","documentation","sdk","@grafana/data"]
+type = "docs"
+draft = true
++++
+
+## DataSourcePluginMeta interface
+
+<b>Signature</b>
+
+```typescript
+export interface DataSourcePluginMeta<T extends KeyValue = {}> extends PluginMeta<T> 
+```
+<b>Import</b>
+
+```typescript
+import { DataSourcePluginMeta } from '@grafana/data';
+```
+<b>Properties</b>
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [alerting](#alerting-property) | <code>boolean</code> |  |
+|  [annotations](#annotations-property) | <code>boolean</code> |  |
+|  [builtIn](#builtin-property) | <code>boolean</code> |  |
+|  [category](#category-property) | <code>string</code> |  |
+|  [hasQueryHelp](#hasqueryhelp-property) | <code>boolean</code> |  |
+|  [logs](#logs-property) | <code>boolean</code> |  |
+|  [metrics](#metrics-property) | <code>boolean</code> |  |
+|  [mixed](#mixed-property) | <code>boolean</code> |  |
+|  [queryOptions](#queryoptions-property) | <code>PluginMetaQueryOptions</code> |  |
+|  [sort](#sort-property) | <code>number</code> |  |
+|  [streaming](#streaming-property) | <code>boolean</code> |  |
+
+### alerting property
+
+<b>Signature</b>
+
+```typescript
+alerting?: boolean;
+```
+
+### annotations property
+
+<b>Signature</b>
+
+```typescript
+annotations?: boolean;
+```
+
+### builtIn property
+
+<b>Signature</b>
+
+```typescript
+builtIn?: boolean;
+```
+
+### category property
+
+<b>Signature</b>
+
+```typescript
+category?: string;
+```
+
+### hasQueryHelp property
+
+<b>Signature</b>
+
+```typescript
+hasQueryHelp?: boolean;
+```
+
+### logs property
+
+<b>Signature</b>
+
+```typescript
+logs?: boolean;
+```
+
+### metrics property
+
+<b>Signature</b>
+
+```typescript
+metrics?: boolean;
+```
+
+### mixed property
+
+<b>Signature</b>
+
+```typescript
+mixed?: boolean;
+```
+
+### queryOptions property
+
+<b>Signature</b>
+
+```typescript
+queryOptions?: PluginMetaQueryOptions;
+```
+
+### sort property
+
+<b>Signature</b>
+
+```typescript
+sort?: number;
+```
+
+### streaming property
+
+<b>Signature</b>
+
+```typescript
+streaming?: boolean;
+```