feat: add exclude option to config to omit modules by name or regex

[tlambert03]

• exclude (list[str]) - List of module paths or patterns to exclude.
  Can be specified as exact module paths (e.g., 'package.module', 'package.subpackage')
  which will also exclude any submodules, or as regex patterns prefixed with 're:'
  (e.g., 're:package\.utils\..*'). Regex patterns are matched against the full
  module path.

also closes #11

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (d61e327) to head (25a0c7e).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #12   +/-   ##
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  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines          125       142   +17     
=========================================
+ Hits           125       142   +17     

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