Add a Change Tileset testcase and update the Testgames 2000 and 2003

[Mimigris]

TestGame 2000:

• Add the following EasyRPG RTP assets for use in testcases: CharSet/People2 (for use in the Transitions test to no longer rely on a Don Miguel RTP asset), ChipSet/Dungeon, ChipSet/Exterior, ChipSet/Interior, ChipSet/Ship, ChipSet/World2 (for use in the Change Tileset testcase).
• Update the following EasyRPG RTP assets to match with the ones currently present: CharSet/Chara1 (Actor1), GameOver/GameOver. Also update the asset FaceSet/Chara1 since it uses graphics from the EasyRPG RTP.
• Remove the following unused assets: Title/Title3, Title/Title4. Keeping the assets Title/Title1 since used as a cover for the game on the Android version and keeping the System2 and BattleWeapon folders since used to be used as a way to detect the engine in the past.
• Rename the assets ChipSet/Basis to ChipSet/World and ChipSet/Basis-flat to ChipSet/World-flat.
• Rename some maps in the maptree to avoid having maps with the same name when looking at it.
• Add tests to the Music Playing testcase to play non-existing music, as well as one to check the Midi Play Location and if the Current BGM has completed a loop.
• Add tests to set a variable to Money, Party Size, Save count, Battle count, Win count, Loss count, Escape count, Item is Equipped, Item 0 is Equipped (to check if an empty slot is present) to the Control Variables testcase, as well as a test battle to test to update the win, loss and escape counts.
• Add a test to set a variable to the Timer's Remaining Time in the Timer Operations testcase.
• Add a Change tileset testcase.
• Add a test to change the font used in the Change System testcase, as well as one to test the text there.

TestGame 2003:

• Remove the placeholder ultimate_rt_eb.dll file that was used to detect the game and replace it by an EasyRPG.ini file.
• Fix some typos for the battle lines.

[Ghabry]

Thanks for the new testcase and all the other maintenance work.

Quick question: You added ChipSet/World2.png. Is this used in the ChipSet test? If not please remove it.

[Mimigris]

Quick question: You added ChipSet/World2.png. Is this used in the ChipSet test? If not please remove it.

Related to Player #3046, I've added in the Change Tileset testcase the display of events using graphics from the ChipSet, and to properly be able to check this, I needed to have tiles having the same graphics but different transparency properties, so I've made an edited version of the World ChipSet and used it for that, so World2 is used.