1.0.0

• Started to use semver in package versions
• Added environment variables parsing. Now you could use COD2_SET_ prefix to set cvar! E.g. COD2_SET_net_port=28960. The same with COD2_SETA_ and COD2_SETS_, feel free to use.
• Now you don't have to specify CHECK_PORT - it would be parsed from envs or params string. But it you want, you still can - backwards compatibility!
• Github Actions! Now all builds automatically upload to DockerHub and Github Packages.