Reduce swift-tool-version, fix warning

Revert combine Params value processing, correct tests

Refactor to use single funtion to parse @params value

Partially handle enum, add tests

Fix output of Optional type, add testcase

Add custom mapper to @params, parse param value more properly

Merge branch 'main' of github.com:kientux/parameterize

Reduce swift-tools-version

Reduce swift-tools-version