Add GitHub Actions

[phanect]

This PR adds configs for GitHub Actions.
Currently, it verifies if the build and check (with @astro/check, ESLint, and Prettier) are successfully done.
I also fixed errors and warnings by the linters.

• Currently, GitHub Actions runs with Node.js v18, v20, and v22. I found AstroWind also supports v21 according to engine.node in package.json, and should we test with v21 on the CI?
• If the naming for npm scripts does not match your preference, let me know how I should fix it, or feel free to add commits to fix it.
• This PR includes changes for package-lock.json. Since it would probably conflict with Convert JavaScript files to TypeScript #501, please regenerate package-lock.json on your end, or let me regenerate it if it is required.
• You might want to overwrite package-lock.json on your end to ensure I'm not an attacker to inject malicious code in package-lock.json

[phanect]

I have rebased this branch to resolve the conflict.

[prototypa]

Hi @phanect

Thank you very much for this.

Question: why do you repeat the check job with version 22 if you have already executed that verification in the build job?

[phanect]

Thank you for the review, @prototypa.

I guess astro build does not check everything checked by astro check. It seems to run only some checks.

I will check the behavior of astro build and astro check again.

[phanect]

@prototypa I have confirmed that astro build does not check the typing error of TypeScript while astro check does.
Therefore, both astro build and astro check should run on the CI, IMO.

[phanect]

No, sorry, I have misunderstood what you mean.
I just noticed I wrote npm run check both in the build and check jobs of the GitHub Actions configs.
That's just a mistake. I will fix it.

[prototypa]

Hi @phanect

Thank you so much! Let's approve this PR.