chore: add proper documentation (#763)

* chore: generate API ref using `typedoc`

* chore: declutter readme and add links to ytjs.dev

* chore: clean up

docs/api/namespaces/Utils/functions/generateSidAuth.md

@@ -0,0 +1,21 @@
+[youtubei.js](../../../README.md) / [Utils](../README.md) / generateSidAuth
+
+# Function: generateSidAuth()
+
+> **generateSidAuth**(`sid`): `Promise`\<`string`\>
+
+Generates an authentication token from a cookies' sid.
+
+## Parameters
+
+• **sid**: `string`
+
+Sid extracted from cookies
+
+## Returns
+
+`Promise`\<`string`\>
+
+## Defined in
+
+[src/utils/Utils.ts:96](https://github.com/LuanRT/YouTube.js/blob/eb21af33db708f0355f4fb15881f5d4fabc7b06c/src/utils/Utils.ts#L96)