Allow hiding " - EasyRPG Player" from application / window title

[fdelapena]

Currently, Player shows, e.g. "Game Title - EasyRPG Player" and optionally the FPS count.
The proposal is to show just "Game Title" and optionally the FPS count.

This feature would help to get visual parity with RPG_RT.exe. Some game authors would prefer to hide this text as an option somewhere and display game title from (executable name).ini¹

Games without title show "Untitled" (don't confuse with the default Untitled title in .ini) until the game loads and the interpreter reads the ini.
If we wanted to keep some branding, Player could display EasyRPG Player by default in game browser or in logo transitions until it reaches the title scene.

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¹The (executable name).ini is on purpose: the rpg maker interpreter, if renamed, reads the GameTitle from it. Other options (fullpackageflag, hidetitle, etc.) are always read from RPG_RT.ini.

This gets harder to read on renamed games, so it is possible that Player will fail currently to read game title if set on both RPG_RT.ini and (executable name).ini and they differ. This is a corner case, however, and maybe could be handled from RPG_RT.ini only, if exists, for simplicity.