Add Part 2 levels / Update Part 1 levels

[kori4r2]

• Write part 2 script
• Create new scenes for part 2
• Populate new scenes
• Validate quest progress
• Create updated sprites for part 1
• Update part 1 scenes
• Add Part 2 Enemies #5
• Rework Quest System #15
• Ensure compatibility with progress of previous version

[kori4r2]

Some of the ConfusingMaze scenes still had old lava sprites, might need to double check for that, as well as chapter 2 scenes as precaution

[kori4r2]

The scene trigger from CerberusGate to the first scene of chapter 2 needs to have the save and warp positions updated.(Fixed) Some battle dialogues might also be missing BGM and BGImage references.

[kori4r2]

• Some maps also need to have the tilemap grid adjusted in order to properly limit camera movement bounds.
• The random encounter calculator has to be updated in every scene with the chapter 2 battle background and new BGM.
• Changes should be made in branch Phase2-BasedRemap
• This is a save file with a save slot level 19 right before fighting Cerberus and another slot level 20 right after beating it, it should make the testing process easier:
  SaveFile.zip