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/README.md

@@ -0,0 +1,47 @@
+[youtubei.js](../../README.md) / Utils
+
+# Utils
+
+## Index
+
+### Classes
+
+- [ChannelError](classes/ChannelError.md)
+- [InnertubeError](classes/InnertubeError.md)
+- [MissingParamError](classes/MissingParamError.md)
+- [OAuth2Error](classes/OAuth2Error.md)
+- [ParsingError](classes/ParsingError.md)
+- [PlayerError](classes/PlayerError.md)
+- [SessionError](classes/SessionError.md)
+
+### Type Aliases
+
+- [DeviceCategory](type-aliases/DeviceCategory.md)
+- [FindFunctionArgs](type-aliases/FindFunctionArgs.md)
+- [FindFunctionResult](type-aliases/FindFunctionResult.md)
+
+### Functions
+
+- [base64ToU8](functions/base64ToU8.md)
+- [concatMemos](functions/concatMemos.md)
+- [debugFetch](functions/debugFetch.md)
+- [deepCompare](functions/deepCompare.md)
+- [escapeStringRegexp](functions/escapeStringRegexp.md)
+- [findFunction](functions/findFunction.md)
+- [generateRandomString](functions/generateRandomString.md)
+- [generateSidAuth](functions/generateSidAuth.md)
+- [getCookie](functions/getCookie.md)
+- [getRandomUserAgent](functions/getRandomUserAgent.md)
+- [getStringBetweenStrings](functions/getStringBetweenStrings.md)
+- [hasKeys](functions/hasKeys.md)
+- [isTextRun](functions/isTextRun.md)
+- [streamToIterable](functions/streamToIterable.md)
+- [throwIfMissing](functions/throwIfMissing.md)
+- [timeToSeconds](functions/timeToSeconds.md)
+- [u8ToBase64](functions/u8ToBase64.md)
+
+## References
+
+### Platform
+
+Re-exports [Platform](../../classes/Platform.md)