Added better CI

[orangemug]

This PR adds better CI, dev scripts and testing of published output.

There is a test run over https://github.com/orangemug/OOXML-Validator/actions/runs/9669239324 to view, results shown below

The publish-test-* scripts, run the script and test for the default output "Value cannot be null." on the target environment.

There are also now some development scripts, which get used in CI also (and by me when developing this)

Development

You can run some development scripts with

./dev.sh help
# ./dev.sh <command> [build_env]
# 
#   help                 show this help message
#   docker               docker container for development
#   build <build_env>    build
#   envs                 show build envs
#   run <build_env>      run the command line
# 

To build run the following, replacing linux-x64 with your environment

./dev.sh build linux-x64

Run the executable with

./dev.sh run linux-x64 ./test.docx

If you don't want to install dotnet just run the following to start a container shell

./dev.sh docker
# root@8b0f1aad055c:/code# [RUN YOUR COMMANDS HERE]

[mikeebowen]

@orangemug This is great, thanks for the contribution!