Generate Typescript Docs for @actions/artifact (#1595)

* autogenerate artifact documentation

* clean up comments for better autogen docs

packages/artifact/docs/generated/interfaces/Artifact.md

@@ -0,0 +1,62 @@
+[@actions/artifact](../README.md) / Artifact
+
+# Interface: Artifact
+
+An Actions Artifact
+
+## Table of contents
+
+### Properties
+
+- [createdAt](Artifact.md#createdat)
+- [id](Artifact.md#id)
+- [name](Artifact.md#name)
+- [size](Artifact.md#size)
+
+## Properties
+
+### createdAt
+
+• `Optional` **createdAt**: `Date`
+
+The time when the artifact was created
+
+#### Defined in
+
+[src/internal/shared/interfaces.ts:123](https://github.com/actions/toolkit/blob/e3764a5/packages/artifact/src/internal/shared/interfaces.ts#L123)
+
+___
+
+### id
+
+• **id**: `number`
+
+The ID of the artifact
+
+#### Defined in
+
+[src/internal/shared/interfaces.ts:113](https://github.com/actions/toolkit/blob/e3764a5/packages/artifact/src/internal/shared/interfaces.ts#L113)
+
+___
+
+### name
+
+• **name**: `string`
+
+The name of the artifact
+
+#### Defined in
+
+[src/internal/shared/interfaces.ts:108](https://github.com/actions/toolkit/blob/e3764a5/packages/artifact/src/internal/shared/interfaces.ts#L108)
+
+___
+
+### size
+
+• **size**: `number`
+
+The size of the artifact in bytes
+
+#### Defined in
+
+[src/internal/shared/interfaces.ts:118](https://github.com/actions/toolkit/blob/e3764a5/packages/artifact/src/internal/shared/interfaces.ts#L118)