NSFS | NC | Refactor Bucketspace_fs.delete_bucket() and others

[romayalon]

Explain the changes

1. Refactored delete_bucket() function in 2 aspects -
   • Bucketspace_fs.js -
     - The 3 (different functions) calls to namespace_bucket_cache functions
     were merged to a new function call that returns bucket and ns info.
     - Moved inline tmpdir path to a function in native_fs_utils (called this function from other places as well)
   • object_sdk.js - Added a new function called read_bucket_full_info().
   • native_fs_utils.js -
     - Added 2 new functions called get_bucket_tmpdir_full_path() and get_bucket_tmpdir_name() and changed the calls from different files to re-use this code block.
   • namespace_fs.js -
     - Renamed get_bucket_tmpdir() to get_bucket_tmpdir_name() and changed the
     implementation to call the native_fs_utils function.
     - Added get_bucket_tmpdir_full_path() to call the compatible native_fs_utils.js function with the namespace bucket_path and bucket_id.

VSC error fixes -

• bucketspace_simple_fs.js -
  - Added missing put_bucket_logging(), get_bucket_logging(), delete_bucket_logging() function declerations (unimplemented).
  - Added function declaretions to delete_bucket() and get_bucket_website()

• nb.d.ts - Added a new type NativeFSUserObject and added it to the return value of getpwname() (fixed errors in test_bucketspace_fs.js)

Issues: Fixed #xxx / Gap #xxx

Testing Instructions:

• Doc added/updated
• Tests added