feat: add enableFederation flag to server

[meskill]

Summary:
Briefly describe the changes made in this PR.

Issue Reference(s):
Fixes #... (Replace "..." with the issue number)

Build & Testing:

• I ran cargo test successfully.
• I have run ./lint.sh --mode=fix to fix all linting issues raised by ./lint.sh --mode=check.

Checklist:

• I have added relevant unit & integration tests.
• I have updated the documentation accordingly.
• I have performed a self-review of my code.
• PR follows the naming convention of <type>(<optional scope>): <title>

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.44%. Comparing base (aab7e07) to head (a4f23ef).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2919   +/-   ##
=======================================
  Coverage   87.43%   87.44%           
=======================================
  Files         263      263           
  Lines       26422    26428    +6     
=======================================
+ Hits        23103    23109    +6     
  Misses       3319     3319           

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[tusharmath]

• Create a PR for docs.
• Resolve conflicts.

[meskill]

• Create a PR for docs.
• Resolve conflicts.

tailcallhq/tailcallhq.github.io#524