[feat] solve common dir

todo: local cfg dir after resolving steam users

src/store/steam.ts

@@ -3,6 +3,7 @@ import { store } from "@tauri-store/valtio"
 import { DEFAULT_STORE_CONFIG } from "./config"
 import { useSnapshot } from "valtio"
 import { invoke } from "@tauri-apps/api/core"
+import path from "path"
 
 const defaultValue = {
   steamDir: "C:\\Program Files (x86)\\Steam",
@@ -36,6 +37,7 @@ export const useSteamStore = () => {
   return {
     state,
     store: steamStore,
+    cs2BaseDir,
     setDir,
     setCsDir,
     setUsers,
@@ -48,6 +50,10 @@ export const useSteamStore = () => {
   }
 }
 
+const cs2BaseDir = () => {
+  return path.normalize(steamStore.state.cs2Dir.replaceAll("\\", "/") + "/../../..")
+}
+
 const setDir = (dir: string) => {
   steamStore.state.steamDir = dir
 }