Add support for resolving directories in /teamspace/lightning_storage

[bhimrazy]

What does this PR do ?

• Add new directory resolver for /teamspace/lightning_storage/ paths
• Support R2 cloud storage as source in data connections for /teamspace/lightning_storage/

Partially addresses #697

[gitguardian]

⚠️ GitGuardian has uncovered 1 secret following the scan of your pull request.

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🔎 Detected hardcoded secret in your pull request

GitGuardian id	GitGuardian status	Secret	Commit	Filename
5685611	Triggered	Generic High Entropy Secret	21b8e01	tests/streaming/test_resolver.py	View secret

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---

^{🦉 GitGuardian detects secrets in your source code to help developers and security teams secure the modern development process. You are seeing this because you or someone else with access to this repository has authorized GitGuardian to scan your pull request.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84%. Comparing base (42cbc98) to head (da2c81c).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@         Coverage Diff         @@
##           main   #695   +/-   ##
===================================
  Coverage    84%    84%           
===================================
  Files        52     52           
  Lines      7081   7095   +14     
===================================
+ Hits       5958   5972   +14     
  Misses     1123   1123           

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[tchaton]

Looks great !