refactor: read parquet metadata

[QuenKar]

I hereby agree to the terms of the GreptimeDB CLA

What's changed and what's your intention?

1. introduce MetadataLoader
2. using opendal read_with and range to read parquet metadata instead of using reader.

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR does not require documentation updates.

Refer to a related PR or issue link (optional)

Closes #3191

[codecov]

Codecov Report

Attention: 37 lines in your changes are missing coverage. Please review.

Comparison is base (2e4c48a) 85.78% compared to head (0284ca4) 85.33%.
Report is 3 commits behind head on main.

❗ Current head 0284ca4 differs from pull request most recent head a8c347b. Consider uploading reports for the commit a8c347b to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3199      +/-   ##
==========================================
- Coverage   85.78%   85.33%   -0.46%     
==========================================
  Files         833      834       +1     
  Lines      136802   137192     +390     
==========================================
- Hits       117362   117076     -286     
- Misses      19440    20116     +676