blobstore: make blob store autocloseable throughout

[sandeepvinayak]

Summary

< Provide a brief description of the changes in this PR >

Some conventions to follow

1. add the module name as a prefix
   • for example: add a prefix: docstore: for document store module, blobstore for Blob Store module
2. for a test only PR, add test:
3. for a perf improvement only PR, add perf:
4. for a refactoring only PR, add "refactor:"

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 47 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.14%. Comparing base (3953892) to head (c266a48).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...salesforce/multicloudj/blob/gcp/GcpBlobClient.java	0.00%	6 Missing ⚠️
.../salesforce/multicloudj/blob/gcp/GcpBlobStore.java	0.00%	6 Missing ⚠️
.../multicloudj/blob/gcp/async/GcpAsyncBlobStore.java	0.00%	6 Missing ⚠️
.../multicloudj/blob/aws/async/AwsAsyncBlobStore.java	0.00%	5 Missing ⚠️
...salesforce/multicloudj/blob/ali/AliBlobClient.java	0.00%	3 Missing ⚠️
.../salesforce/multicloudj/blob/ali/AliBlobStore.java	0.00%	3 Missing ⚠️
...salesforce/multicloudj/blob/aws/AwsBlobClient.java	0.00%	3 Missing ⚠️
.../salesforce/multicloudj/blob/aws/AwsBlobStore.java	0.00%	3 Missing ⚠️
...lticloudj/blob/async/client/AsyncBucketClient.java	0.00%	3 Missing ⚠️
...cloudj/blob/async/driver/BlobStoreAsyncBridge.java	0.00%	3 Missing ⚠️
... and 2 more

❌ Your patch status has failed because the patch coverage (0.00%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #194      +/-   ##
============================================
- Coverage     83.62%   83.14%   -0.49%     
  Complexity       91       91              
============================================
  Files           150      150              
  Lines          8087     8134      +47     
  Branches        944      945       +1     
============================================
  Hits           6763     6763              
- Misses          876      923      +47     
  Partials        448      448              

Flag	Coverage Δ
unittests	83.14% <0.00%> (-0.49%)	⬇️

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[LihaoLiuXs]

Do we need a default close method in AbstractBlobClient and AbstractBlobStore?

@Override public void close() { }

[sandeepvinayak]

not really because we want to force the providers to implement the close