Update scancode names and mappings

[seragh]

Description

This completes the list of names for SDL scancodes and maps some additional Linux keycodes to SDL scancodes.

Scancodes I wasn't able to map linux keycodes for, either as it may not be possible or like in case of SDL_SCANCODE_AC_PRINT the KEY_PRINT is already mapped to SDL_SCANCODE_PRINTSCREEN.

• SDL_SCANCODE_NONUSHASH = 50, /**< ISO USB keyboards actually use this code
• SDL_SCANCODE_EXECUTE = 116,
• SDL_SCANCODE_KP_EQUALSAS400 = 134,
• SDL_SCANCODE_INTERNATIONAL6 = 140,
• SDL_SCANCODE_INTERNATIONAL7 = 141,
• SDL_SCANCODE_INTERNATIONAL8 = 142,
• SDL_SCANCODE_INTERNATIONAL9 = 143,
• SDL_SCANCODE_LANG6 = 149, /**< reserved */
• SDL_SCANCODE_LANG7 = 150, /**< reserved */
• SDL_SCANCODE_LANG8 = 151, /**< reserved */
• SDL_SCANCODE_LANG9 = 152, /**< reserved */
• SDL_SCANCODE_PRIOR = 157,
• SDL_SCANCODE_RETURN2 = 158,
• SDL_SCANCODE_SEPARATOR = 159,
• SDL_SCANCODE_OUT = 160,
• SDL_SCANCODE_OPER = 161,
• SDL_SCANCODE_CLEARAGAIN = 162,
• SDL_SCANCODE_CRSEL = 163,
• SDL_SCANCODE_EXSEL = 164,
• SDL_SCANCODE_KP_00 = 176,
• SDL_SCANCODE_KP_000 = 177,
• SDL_SCANCODE_THOUSANDSSEPARATOR = 178,
• SDL_SCANCODE_DECIMALSEPARATOR = 179,
• SDL_SCANCODE_CURRENCYUNIT = 180,
• SDL_SCANCODE_CURRENCYSUBUNIT = 181,
• SDL_SCANCODE_KP_LEFTBRACE = 184,
• SDL_SCANCODE_KP_RIGHTBRACE = 185,
• SDL_SCANCODE_KP_TAB = 186,
• SDL_SCANCODE_KP_BACKSPACE = 187,
• SDL_SCANCODE_KP_A = 188,
• SDL_SCANCODE_KP_B = 189,
• SDL_SCANCODE_KP_C = 190,
• SDL_SCANCODE_KP_D = 191,
• SDL_SCANCODE_KP_E = 192,
• SDL_SCANCODE_KP_F = 193,
• SDL_SCANCODE_KP_XOR = 194,
• SDL_SCANCODE_KP_POWER = 195,
• SDL_SCANCODE_KP_PERCENT = 196,
• SDL_SCANCODE_KP_LESS = 197,
• SDL_SCANCODE_KP_GREATER = 198,
• SDL_SCANCODE_KP_AMPERSAND = 199,
• SDL_SCANCODE_KP_DBLAMPERSAND = 200,
• SDL_SCANCODE_KP_VERTICALBAR = 201,
• SDL_SCANCODE_KP_DBLVERTICALBAR = 202,
• SDL_SCANCODE_KP_COLON = 203,
• SDL_SCANCODE_KP_HASH = 204,
• SDL_SCANCODE_KP_SPACE = 205,
• SDL_SCANCODE_KP_AT = 206,
• SDL_SCANCODE_KP_EXCLAM = 207,
• SDL_SCANCODE_KP_MEMSTORE = 208,
• SDL_SCANCODE_KP_MEMRECALL = 209,
• SDL_SCANCODE_KP_MEMCLEAR = 210,
• SDL_SCANCODE_KP_MEMADD = 211,
• SDL_SCANCODE_KP_MEMSUBTRACT = 212,
• SDL_SCANCODE_KP_MEMMULTIPLY = 213,
• SDL_SCANCODE_KP_MEMDIVIDE = 214,
• SDL_SCANCODE_KP_CLEAR = 216,
• SDL_SCANCODE_KP_CLEARENTRY = 217,
• SDL_SCANCODE_KP_BINARY = 218,
• SDL_SCANCODE_KP_OCTAL = 219,
• SDL_SCANCODE_KP_DECIMAL = 220,
• SDL_SCANCODE_KP_HEXADECIMAL = 221,
• SDL_SCANCODE_AC_PRINT = 278, /**< AC Print */

Existing Issue(s)

Fixes: #12361