Merge pull request #32 from c9s/c9s/add-workflows

CI: add workflows

fix: do not alias simple type variables like int, int64 as valid values

update param doc

Merge pull request #27 from c9s/c9s/fix-default-value-handling

FIX: fix default value handling

fix GetQueryParameters template

Merge pull request #26 from c9s/c9s/error-response

FIX: wrap error response with Response, so we can get the error code

Merge pull request #25 from c9s/c9s/fix-slug-field-type-scan

FIX: fix slug / query field scan

downgrade gomod version for go 1.21

set go requirement to 1.21

Merge pull request #24 from c9s/c9s/fix-204-no-content

FIX: handle 204 no content in DecodeJson method