fix(build): fix build/packages issue and update to comply with new c++ standards

[CanisHelix]

Add Categories to BP Exposed Functions and Properties.

Include missing LocalPlayer include.

As per https://docs.unrealengine.com/5.0/en-US/MigrationGuide/ updating from Native Pointers to TObjectPtr's. Without this change, errors like Error: Native pointer usage in member declaration detected [[[AALSBaseCharacter*]]]. This is disallowed for the target/module, consider TObjectPtr as an alternative. will occur if compiled outside of a path containing /plugins/. So if a user migrates to their own project source folder, or once Epic fixes up the TODO in https://github.com/EpicGames/UnrealEngine/blob/5.0.0-preview-1/Engine/Source/Programs/UnrealHeaderTool/Private/HeaderParser.cpp#L4144-L4152 to remove the current exclusion, users will face compilation errors. This commit future proof's this.

[dyanikoglu]

Thanks for TObjectPtr update 👍🏻 , I was planning to work on that soon but you were faster :)

However, your commit 4afc5bd will probably mess up the git history, thus I recommend force pushing changes without involving dist folder before I can merge this.

[CanisHelix]

No worries, I didn't actually notice the TObjectPtr issues until I built the plugin alone by itself via Jenkins outside of a /plugins/ directory. Removed 4afc5bd from the fork history.

[dyanikoglu]

Merged.