Support raw bytes as input & binary/blob/bit will be convert to Uint8Array

[shiyuhang0]

In this PR, Serverless-js will handle the raw bytes more correct. we do two things:

1. Support raw bytes as input (encoded with hex). Before this pr. raw bytes will be decoded to string with utf8, which will change the bytes when it is an invalid utf8 bytes.
2. binary/blob/bit Type will be converted to Uint8Array as output. Before this PR, they will be converted to the string with utf8. (some bytes is not a valid utf8 bytes, we should not do this)

We also changed our backend, the backend will pass the hex string to serverless-js for binary/blob/bit. Before, the backend will replace invalid utf8 bytes with the Unicode replacement rune when encoded as JSON string. As a result, serverless-js may accept the wrong bytes.

[shiyuhang0]

IT success in https://github.com/tidbcloud/serverless-js/actions/runs/8002321700