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/appendedvectors.md

@@ -0,0 +1,153 @@
++++
+# -----------------------------------------------------------------------
+# Do not edit this file. It is automatically generated by API Documenter.
+# -----------------------------------------------------------------------
+title = "AppendedVectors"
+keywords = ["grafana","documentation","sdk","@grafana/data"]
+type = "docs"
+draft = true
++++
+
+## AppendedVectors class
+
+This may be more trouble than it is worth. This trades some computation time for RAM -- rather than allocate a new array the size of all previous arrays, this just points the correct index to their original array values
+
+<b>Signature</b>
+
+```typescript
+export declare class AppendedVectors<T = any> implements Vector<T> 
+```
+<b>Import</b>
+
+```typescript
+import { AppendedVectors } from '@grafana/data';
+```
+<b>Constructors</b>
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [constructor(startAt)](#constructor-startat) |  | Constructs a new instance of the <code>AppendedVectors</code> class |
+
+<b>Properties</b>
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [length](#length-property) |  | <code>number</code> |  |
+|  [source](#source-property) |  | <code>Array&lt;AppendedVectorInfo&lt;T&gt;&gt;</code> |  |
+
+<b>Methods</b>
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [append(v)](#append-method) |  |  |
+|  [get(index)](#get-method) |  |  |
+|  [setLength(length)](#setlength-method) |  | Make the vector look like it is this long |
+|  [toArray()](#toarray-method) |  |  |
+|  [toJSON()](#tojson-method) |  |  |
+
+### constructor(startAt)
+
+Constructs a new instance of the `AppendedVectors` class
+
+<b>Signature</b>
+
+```typescript
+constructor(startAt?: number);
+```
+<b>Parameters</b>
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  startAt | <code>number</code> |  |
+
+### length property
+
+<b>Signature</b>
+
+```typescript
+length: number;
+```
+
+### source property
+
+<b>Signature</b>
+
+```typescript
+source: Array<AppendedVectorInfo<T>>;
+```
+
+### append method
+
+<b>Signature</b>
+
+```typescript
+append(v: Vector<T>): AppendedVectorInfo<T>;
+```
+<b>Parameters</b>
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  v | <code>Vector&lt;T&gt;</code> |  |
+
+<b>Returns:</b>
+
+`AppendedVectorInfo<T>`
+
+### get method
+
+<b>Signature</b>
+
+```typescript
+get(index: number): T;
+```
+<b>Parameters</b>
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  index | <code>number</code> |  |
+
+<b>Returns:</b>
+
+`T`
+
+### setLength method
+
+Make the vector look like it is this long
+
+<b>Signature</b>
+
+```typescript
+setLength(length: number): void;
+```
+<b>Parameters</b>
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  length | <code>number</code> |  |
+
+<b>Returns:</b>
+
+`void`
+
+### toArray method
+
+<b>Signature</b>
+
+```typescript
+toArray(): T[];
+```
+<b>Returns:</b>
+
+`T[]`
+
+### toJSON method
+
+<b>Signature</b>
+
+```typescript
+toJSON(): T[];
+```
+<b>Returns:</b>
+
+`T[]`
+