Added the possiblility to pass ets tweak options

[mmzeeman]

Added the possiblility to pass ets tweak options
Added {write_concurrency, auto} as default tweak

[Copilot]

Pull Request Overview

This PR enhances the router module to accept ETS tweak options for configuring table concurrency settings while updating supported OTP versions in CI configuration.

• Added a new new/2 function to accept custom ETS tweak options and set default concurrency settings
• Refactored table creation to use configurable options instead of hardcoded concurrency settings
• Updated CI configuration to test against newer OTP versions (26, 27, 28) and use actions/checkout@v3

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/router.erl	Added ETS tweak options parameter, default concurrency settings, and refactored table creation
.github/workflows/test.yml	Updated OTP versions and checkout action version

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