adding pkg support

[lemire]

fixes #939

[Copilot]

Pull Request Overview

This PR adds support for pkg-config by introducing a new GitHub Actions workflow for building, installing, and testing Debian packages.

• Introduces a new workflow (.github/workflows/pkg.yml) that runs on push and pull_request events.
• Configures the job to run inside a Debian container and executes build, install, and pkg-config test steps.

Files not reviewed (2)

• CMakeLists.txt: Language not supported
• cmake/JoinPaths.cmake: Language not supported

[lemire]

@aduh95 @anonrig

I named the pkg ada-url but this can be changed to ada. I am mildly concerned that ada could be too generic in this context.

[aduh95]

I named the pkg ada-url but this can be changed to ada. I am mildly concerned that ada could be too generic in this context.

Shouldn't we name it to ada and give instructions on how to change the name if it conflicts? For my use-case, it's not going to conflict and it's slightly annoying to have to patch the name

[lemire]

I switched the name to 'ada'.

[aduh95]

FWIW v4 is available