[Open Assets] srb2bld - SRB2 Build/Package manager CLI

• Added ability to compile from custom local or remote Git repository,
• Added wadcli and SLADE,
• Replaced repository of SRB2 Uncapped PLUS to have latest version of build matching SRB2,
• Names of configuration directories are changed depending on chosen branch,
• Fixed permissions within container,
• Small changes to messages,
• Renamed containers and variables,
• Fixed SRB2 Kart Moe Mansion issues of not removing some files when uninstalling,
• Fixed displaying issues on some Linux distributions,
• Proper assets for each build after last SRB2 update,
• Other fixes.

• Added ability to switch branches before compiling build,
• Fixed SRB2Kart variables that threw "malformed URL" error message when downloading assets,
• Suppressed some messages for system's package managers during installation of dependencies, to avoid getting conflicting output,
• Fixed issue of not installing libopenmpt for macOS when system has more than one path to libraries,
• Corrected paths in environment variables for compiling libraries and SRB2 builds on macOS,
• Fixed conflicts with libpng12,
• Changed method of deploying libraries to AppDir,
• Changed name of SRB2 Final Demo configuration directory to "srb2fd",
• Added more variables with versions of all libraries on macOS and Linux for future upgrades,
• Fixed issue of receiving errors with builtin FUSE module within Linux kernel,
• Fixed issue of linking libgme in Alpine container,
• Fixed issue of messages not displaying colored text correctly on other shells.