Add Docker Support

[kashalls]

Description

This PR extends off of #2455, simply adding support for building the required containers and publishing them to ghcr.io

This PR introduces a github workflow to build and publish a docker container that runs grasscutter on amd64 platforms. The base builder container that gradle provides isn't supported for arm64, therefore we can't build for Raspberry Pi's/ARM-based platforms. This might be fixed in the future.

Configuration file can be loaded by using -v C:\\Grasscutter\\test.json:/app/config.json

Issues fixed by this PR

See #2455

Type of changes

• [ ] Bug fix
• [ ] New feature
• [X] Enhancement
• [ ] Documentation

Checklist:

• [ ] My code follows the style guidelines of this project
• [X ] My pull request is unique and no other pull requests have been opened for these changes
• [X] I have read the Contributing note and Code of conduct
• [X] I am responsible for any copyright issues with my code if it occurs in the future.

[Hartie95]

Just out of curiosity, why is the npm/nodejs update /install required in the docker script?

[KingRainbow44]

presumably for handbook generation; but since it requires extra data, it was skipped anyways

[kashalls]

Just out of curiosity, why is the npm/nodejs update /install required in the docker script?

I added it for handbook generation, makes it easy to add the data into the data task and include it if its needed.