Add keyboard mappings to export/import (#1564)

Author: Pelsin

www/src/Locales/en/BackupPage.jsx

@@ -8,6 +8,7 @@ export default {
 	'load-export-option-label': 'Import {{api}} Options',
 	'api-display-text': 'Display',
 	'api-gamepad-text': 'Gamepad',
+	'api-keyboard-text': 'Keyboard Mappings',
 	'api-led-text': 'LED',
 	'api-ledTheme-text': 'Custom LED Theme',
 	'api-macros-text': 'Macro Mappings',

www/src/Pages/BackupPage.jsx

@@ -24,6 +24,10 @@ const API_BINDING = {
 		get: WebApi.getGamepadOptions,
 		set: WebApi.setGamepadOptions,
 	},
+	keyboard: {
+		get: WebApi.getKeyMappings,
+		set: WebApi.setKeyMappings,
+	},
 	led: { get: WebApi.getLedOptions, set: WebApi.setLedOptions },
 	ledTheme: {
 		get: WebApi.getCustomTheme,