Add config for more CORS middleware options

[pkqk]

Add support for the Access-Control-Allow-Methods and Access-Control-Expose-Headers settings on the CORS middleware.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 69.77%. Comparing base (0345951) to head (5590b87).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #259 +/- ## ========================================== + Coverage 69.75% 69.77% +0.01% ========================================== Files 28 28 Lines 4219 4221 +2 ========================================== + Hits 2943 2945 +2 Misses 1124 1124 Partials 152 152 ```

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