Added config reload and test.

Moved to Maven instead of Gradle.
Using proper project structure and package structure.

Can be found (already updated) here:
https://bitbucket.org/l2jserver/l2j-server-cli/

JDK11, we recommend OpenJDK for both Linux and Windows.
Updating Bitbutcket Pipeline OpenJDK11.
Updating Gradle Wrapper to 5.1.1.

Moving all files to main folder.
Using Gradle to define, manage dependecies and build the project.
Upgraded Gradle wrapper.

 * Added formatter settings missing from [9007].
 * Minor Fix for XSD from [9006].
 * Temp Fix for Skill 2060 "Healing Medicine".
 * Minor Fix for [9017] "is_freightable" is false by default.
 
 Patch by:
 MELERIX

	* Other warnings will be fixed later.

	* Improved formatter a bit.
	* Implemented RestorationRandom effect.
		* Unhardcoded for target, now a player can extract items into it's target depending on skill's target type.
	* Fixed some typos on AdminEventEngine HTML dynamic build.
	* Removed debug messages from ItemSkillsTemplate.
	* Removed extractable skill handler.
	* Fixed OracleTeleport teleport.
	* Replaced all skill types for extractable skills with DUMMY, and added RestorationRandom effect.

	* Using same Code warning/error configuration than core.
	* Fixed respective warnings and errors.
	* Fixing Extractable Skills restriction properly.
		1. Unhardcode Skills Ids.
		1. Now only Item Skills are restricted.
		1. Items with consume count won't be consumed without giving the reward.
		1. Applied to reuse time greater than 5 seconds, there is no point on restrict item skills with less reuse time.
		1. Unhardcoded system message for item reward.
	* Hellbound fixes:
		1. Hellbound should start closed at server start (level 0), thanks Trev.
		1. Quarry ClassCastException fix.
	* Q290_ThreatRemoval removed unnecessary int cast.
	* Q636_TruthBeyond proper method to get an int.
	* Skill Santa Claus' Gift - Luck(22018) typo fix.

	* Datapack part for [L5013].
	* Typo fix for Deltuva AI.
	* NPE fix for "stats" voiced command.
	* Formatting settings for enums.

	* Renamed some method to match it's function.
	* Better Format setting for enums.
'''Note:''' Require [4975].

'''Note:''' Use @formatter to define a block that will be skipped on formatting:
//@formatter:off
Some code.
//@formatter:on

BETA/STABLE: Added some missing warning checks (with default values) introduced in eclipse 3.7+ (modify if needed).

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This if for easier Script development. Imported libs are just for Syntax highlighting and error checking. Make sure the Core Project refers to your correct "Project".