Docker support & CI/CD workflow

[unsektor]

Hello.

Few features:

1. MPQExtractor build in Docker implemented
2. Added CI/CD workflow to build and publish binary (just push tag in origin)

Small documentation enhancement.

Demo how CI/CD works: https://github.com/unsektor/MPQExtractor/actions/runs/24353682865

[unsektor]

For some reason this syntax is not working inside list item. If you wish, i could change this to something other.

[unsektor]

i get rid of ordered list, and now this should be fixed

[unsektor]

one thing is missed up here. publishing built image to ghcr.io. let me fix this.

[unsektor]

one thing is missed up here. publishing built image to ghcr.io. let me fix this.

Should be fixed.
After this MR will be merged and after pushing a tag, github workflow will be triggered.
It will create release and publish docker image to github image registry (ghcr.io), then it could be used like this

docker pull ghcr.io/Sarjuuk/mpq-extractor-debian:0.1.0
docker pull ghcr.io/Sarjuuk/mpq-extractor-debian:latest
docker run --rm -it ghcr.io/Sarjuuk/mpq-extractor-debian -h  # ... will print help message

Updated example of CI/CD run:
https://github.com/unsektor/MPQExtractor/actions/runs/24363855790/

[unsektor]

Probably, this MR should be target to source repository https://github.com/Kanma/MPQExtractor
I am not sure, may be i am wrong. What do you think @Sarjuuk ?

[unsektor]

may be... on release publish this should also create an executable for Windows. I don't think it's too complex thing, but I am not sure it's is required at this moment.