Minor: Uppercase & Lowercase Extensions Correctly

[ThePrimalPea]

PopCap Standard when they uppercase or lowercase file extensions.

This should be applies to every functions that can generating files (like Encode, Decode, Split and Merge,...)

Include extensions: RTON, TXT, PTX, PNG, PAM, WEM, BNK, CFW2 Exclude extension: json (looks better in lowercase)

• Uppercase file extension if the file name has full uppercase alphabet characters (example: LAWNSTRINGS-EN-US, @123456789Z)

• Uppercase file extension if the file name has none alphabet character (example: @123456789#)

• Lowercase file extension if the file name doesn't has full uppercase characters (example: LawnStrings-en-us, 123456789z)

[Haruma-VN]

Refuse to change. If you need uppercase extension go to Script/Executor/Methods/*.js and change them yourself.