Add max_export_batch_size and max_queue_size for otel_traces_export

[doanbutar]

Adding env variable or config options to reduce Beyla batch size

[CLAassistant]

All committers have signed the CLA.

[codecov-commenter]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 43.30%. Comparing base (d47d2f4) to head (9b1c4c0).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2313   +/-   ##
=======================================
  Coverage   43.30%   43.30%           
=======================================
  Files          38       38           
  Lines        2974     2974           
=======================================
  Hits         1288     1288           
  Misses       1573     1573           
  Partials      113      113           

Flag	Coverage Δ
unittests	43.30% <ø> (ø)

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