[processor] Mark module as 1.x

[mx-psi]

Description

Marks processor module as 1.x.

Needs #12695

Link to tracking issue

Fixes #12677

[mx-psi]

cc @open-telemetry/collector-approvers I intend to merge this next Friday if I get enough approvals by then (and of course after #12695 is merged)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.57%. Comparing base (562aedc) to head (341ac19).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #12697   +/-   ##
=======================================
  Coverage   91.57%   91.57%           
=======================================
  Files         483      483           
  Lines       26381    26381           
=======================================
  Hits        24158    24158           
  Misses       1762     1762           
  Partials      461      461           

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[bogdandrutu]

Blocked by #12695. Please dismiss this blocking comment when that is solved :)