[feat] support %command% env args to windows and oculus

* refactored additionalArgs to command and change its type to string instead of string array

src/shared/models/bs-launch/launch-option.interface.ts

@@ -14,6 +14,6 @@ export type LaunchMod = typeof LaunchMods[keyof typeof LaunchMods];
 export interface LaunchOption {
     version: BSVersion,
     launchMods?: LaunchMod[],
-    additionalArgs?: string[],
+    command?: string,
     admin?: boolean
 }