change config name from "config.toml" to "kanata-tray.toml"

changing so it's more specific

README.md

@@ -15,7 +15,7 @@ Works on Windows and Linux.
 Default config file will be autogenerated for you on the first run. 
 You can access it from from: `Click Tray Icon > Configure`. 
 
-Config file name is `config.toml`.
+Config file name is `kanata-tray.toml`.
 
 On Linux, the config folder location is `~/.config/kanata-tray`. 
 On Windows, it's `C:\Users\<YourUsername>\AppData\Roaming\kanata-tray`
@@ -61,7 +61,7 @@ kanata_config = '~/.config/kanata/test.kbd'
 
 `preset.autorun` - when set to true, preset will run at kanata-tray startup.
 
-`preset.layer_icons` - maps kanata layer names to custom icons. Custom icons should be placed in `icons` folder in config directory, next to `config.toml`. Accepted icon types on Linux are `.ico`, `.png`, `.jpg`; on Windows only `.ico` is supported. You can assign an icon to special identifier `'*'` to change icon for other layers not specified in `[layer_icons]`.
+`preset.layer_icons` - maps kanata layer names to custom icons. Custom icons should be placed in `icons` folder in config directory, next to `kanata-tray.toml`. Accepted icon types on Linux are `.ico`, `.png`, `.jpg`; on Windows only `.ico` is supported. You can assign an icon to special identifier `'*'` to change icon for other layers not specified in `[layer_icons]`.
 
 `defaults` - a config item, that allows to overwrite default values for all presets.
 It accepts same configuration options that `presets` do.
@@ -76,7 +76,7 @@ Other notes:
 
 ### Config completion in editors
 
-In VSCode to get editor support for your kanata-tray config, install [Even Better TOML](https://marketplace.visualstudio.com/items?itemName=tamasfe.even-better-toml#completion-and-validation-with-json-schema) extension and the following line at the top of your `config.toml` file. 
+In VSCode to get editor support for your kanata-tray config, install [Even Better TOML](https://marketplace.visualstudio.com/items?itemName=tamasfe.even-better-toml#completion-and-validation-with-json-schema) extension and the following line at the top of your `kanata-tray.toml` file. 
 ```toml
 "$schema" = "https://raw.githubusercontent.com/rszyma/kanata-tray/main/doc/config_schema.json"
 ```

main.go

@@ -43,14 +43,14 @@ func main() {
 }
 
 func mainImpl() error {
-	configFileName := "config.toml"
+	configFileName := "kanata-tray.toml"
 	var configFile string
 	var configFolder string
 
-	// First try reading config.toml from the folder where kanata-tray is located.
+	// First try reading kanata-tray.toml from the folder where kanata-tray is located.
 	exePath, err := os.Executable()
 	if err != nil {
-		fmt.Println("Failed attempt to read config.toml from kanata-tray folder", err)
+		fmt.Println("Failed attempt to read kanata-tray.toml from kanata-tray folder", err)
 	}
 	localConfigFolder := filepath.Dir(exePath)
 	localConfigFile := filepath.Join(localConfigFolder, configFileName)