improv(Home Directory): Base all actions, file- and directory paths on home ServerPackCreators directory. Preparations for GH#438

improv(Home Directory): Base all actions, file- and directory paths on home ServerPackCreators directory. Preparations for GH#438

See merge request !319

# Conflicts:
#	backend/main/resources/CHANGELOG.md

feat(Update Migrations): When updating from an older to a new version, perform necessary migrations on a step-by-step, version-to-version, basis

feat(Update Migrations): When updating from an older to a new version, perform necessary migrations on a step-by-step, version-to-version, basis

See merge request !323

refactor(Migration Message Logging): Make the display window and logging of migration messages a little easier on the eye.

build(Maintenance Release): Writes the current version to your serverpackcreator.properties to `de.griefed.serverpackcreator.version.old`, so following version can execute migrations properly.  If you've used SPC before, please update to this version and run it at least once.

chore(Maintenance): Remove manual write of old version to properties from maintenance release 3.14.6.

test: Set home-directory to tests and run tests in said directory to prevent file-clobbering and unwanted overwrites

fix(JAR folder extraction): Extract all files and folders when running in a dev-env. Allow specifying of multiple file-endings separated with pipe-symbol via use of regex.

style(Editorconfig): Wrap multi-parameter method declarations, align multi-parameter calls and improve method grouping

fix(File and Directory exclusion): Correctly exclude files and directories as per user input and default list of directories to exclude from the server pack by matching the paths of files and directories. Thanks to @ModernGamingWorld for reporting this!

fix(Webservice Propery Loading): Pass property files to load as CLI argument when running Spring to ensure the properties from SPCs home-directory get loaded as well.

refactor: Merge ConfigUtilities into ConfigurationHandler. Extract JSON and XML utilities into separate utilitiy classes, passed to VersionMeta and other parts of ServerPackCreator.

refactor(Execution Time Measurement): Implement custom stopwatch to measure the execution time of tasks.

refactor(SimpleStopWatch): Rearrange methods, apply editorconfig and make getElapsedNanoseconds public

Base operations on home directory and allow specific version migrations

See merge request !324