feat(config): add ahk exe override env vars

This commit introduces two new environment variables to override the exe
name that komorebi uses to verify that AutoHotKey is installed before
launching and reloading 'komorebi.ahk' configuration files.

resolve #147

komorebi/src/main.rs

@@ -118,6 +118,28 @@ lazy_static! {
             dirs::home_dir().expect("there is no home directory")
         }
     };
+    static ref AHK_V1_EXE: String = {
+        let mut ahk_v1: String = String::from("autohotkey.exe");
+
+        if let Ok(komorebi_ahk_v1_exe) = std::env::var("KOMOREBI_AHK_V1_EXE") {
+            if which(&komorebi_ahk_v1_exe).is_ok() {
+                ahk_v1 = komorebi_ahk_v1_exe;
+            }
+        }
+
+        ahk_v1
+    };
+    static ref AHK_V2_EXE: String = {
+        let mut ahk_v2: String = String::from("AutoHotkey64.exe");
+
+        if let Ok(komorebi_ahk_v2_exe) = std::env::var("KOMOREBI_AHK_V2_EXE") {
+            if which(&komorebi_ahk_v2_exe).is_ok() {
+                ahk_v2 = komorebi_ahk_v2_exe;
+            }
+        }
+
+        ahk_v2
+    };
 }
 
 pub static CUSTOM_FFM: AtomicBool = AtomicBool::new(false);
@@ -196,7 +218,7 @@ pub fn load_configuration() -> Result<()> {
     let mut config_v2 = home;
     config_v2.push("komorebi.ahk2");
 
-    if config_v1.exists() && which("autohotkey.exe").is_ok() {
+    if config_v1.exists() && which(&*AHK_V1_EXE).is_ok() {
         tracing::info!(
             "loading configuration file: {}",
             config_v1
@@ -208,7 +230,7 @@ pub fn load_configuration() -> Result<()> {
         Command::new("autohotkey.exe")
             .arg(config_v1.as_os_str())
             .output()?;
-    } else if config_v2.exists() && which("AutoHotkey64.exe").is_ok() {
+    } else if config_v2.exists() && which(&*AHK_V2_EXE).is_ok() {
         tracing::info!(
             "loading configuration file: {}",
             config_v2