Changed altnames file extension from cfg to txt

Author: kala13x

README.md

@@ -68,12 +68,12 @@ In addition to the predefined names, `XRemote` uses alternative button names to
 
 The application stores and reads alternate names from the following file:
 ```
-SD Card/apps_data/flipper_xremote/alt_names.cfg
+SD Card/apps_data/flipper_xremote/alt_names.txt
 ```
 
 If the `Alt-Names` option is enabled in the config and the file does not exist, it will be created automatically with default values during the application's startup. You can edit, add, or remove any button or alternate name values from this file. Button names must either have only the first uppercase or be entirely lowercase. As for alternate names, they are case-insensitive. The button can have one or several comma-separated alternate names.
 
-This is the default `alt_names.cfg` file:
+This is the default `alt_names.txt` file:
 
 ```
 Filetype: XRemote Alt-Names

docs/README.md

@@ -54,7 +54,7 @@ Stop        | Stop
 In addition to the predefined names, XRemote uses alternative button names to make it as easy as possible to interact with different types of IR dumps. That means if a button with the appropriate name is not found in the file, the application will try to find the same button with alternative names. Ensure this feature is enabled in the application settings before you use it.
 
 The application stores and reads alternate names from the following file:
-SD_Card/apps_data/flipper_xremote/alt_names.cfg
+SD_Card/apps_data/flipper_xremote/alt_names.txt
 
 If the Alt-Names option is enabled in the config and the file does not exist, it will be created automatically with default values during the application's startup. You can edit, add, or remove any button or alternate name values from this file. Button names must either have only the first uppercase or be entirely lowercase. As for alternate names, they are case-insensitive. The button can have one or several comma-separated alternate names.
 

xremote_app.h

@@ -38,7 +38,7 @@
 
 #define XREMOTE_APP_FOLDER ANY_PATH("infrared")
 #define XREMOTE_APP_SETTINGS APP_DATA_PATH("xremote.cfg")
-#define XREMOTE_ALT_NAMES APP_DATA_PATH("alt_names.cfg")
+#define XREMOTE_ALT_NAMES APP_DATA_PATH("alt_names.txt")
 
 #define xremote_app_assert_void(cond) \
     if(!cond) return