Deprecate JaegerPropagator

[jack-berg]

Resolves #8006.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.16%. Comparing base (0a1980b) to head (316edbc).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #8019      +/-   ##
============================================
- Coverage     90.16%   90.16%   -0.01%     
+ Complexity     7482     7478       -4     
============================================
  Files           835      834       -1     
  Lines         22563    22559       -4     
  Branches       2239     2239              
============================================
- Hits          20345    20341       -4     
  Misses         1515     1515              
  Partials        703      703              

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[jack-berg]

Note that while these are deprecated, there's no path to us stopping publishing these because they're bundled with others in the opentelemetry-extension-trace-propagators artifact. This contrasts with other deprecations like #7863 and #6119 where we could eventually stop publishing the entire package.