Convert JavaScript files to TypeScript

[phanect]

While most of the AstroWind code is written in TypeScript, there are still some JavaScript files in the repository.
This PR converts those JavaScript files to TypeScript and adds minimal typings.

This PR also includes the following changes:

• Fix bugs detected by TypeScript
• Remove rehype-plugin-image-native-lazy-loading and rewrote the same functionality
• Remove deprecated Squoosh image service because it is warned by tsc

NOTES:

• This PR includes changes for package-lock.json. Since it would probably conflict with Add GitHub Actions #499, 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 conflicts.

[prototypa]

Hi @phanect

Some question:

• Why the decision to uninstall the rehype-plugin-image-native-lazy-loading plugin. I understand that the implementation is very simple but in the future some more functionalities could be added to this packages (if the lazy img specification increased).

[phanect]

@prototypa Thanks for the review!

• Why the decision to uninstall the rehype-plugin-image-native-lazy-loading plugin.

Oops, I forgot to write the reason.
Because it does not include types (d.ts) and I couldn't migrate to TypeScript without removing it.

I considered to contribute to rehype-plugin-image-native-lazy-loading to add types, but I was not sure if the author accept my PR because this library is no longer maintained since 3 years ago.