New parameter for set a mode for auto-bump and update maven submodules

• New parameter (auto-version-bump-mode) to set a mode different then auto for auto-bump, so on auto bump we can select which mode we want(major, minor, patch) without add it into the PR Comment
• For the maven bump, added configuration to update subModules as well.
• For the maven bump, change to git add all the pom.xml files from the project.

Simplified inputs, automatically detects maven and gradle files

Simplified getting of maven and gradle files, no need to define anymore
Fixed gradle settings file

COMMITTER can now be choosen

Deprecating save-state and set-output commands
Added env COMMITTER to set committer type easily

Gradle & Automatic Bumps

v6

Update README.md

Added automatic maven bump

v4.0.0-beta1

Added automatic maven version bump