Fix & Improvement - Suck the Sophon once more

- Use built-in ToHexStringLower for BytesToHex
- Fix SharedViolation exception by unassigning ReadOnly attribute
- Simplify and remove unnecessary Stream bridge
- Add and use alt. SophonChunksInfo if the default url returns 404
  This to fix an issue where sometimes the chunk files would return 404 due to identical chunks but was not existence in the new ChunksInfo
- Always check for file availability on enumerating updates
- Fix non-exist files not getting renamed on update
- More UnassignReadOnlyFromFileInfo() checks
- Fix wrong URL path for manifestToProtoTaskCallback
- Reuse Proto Parser Code