monorepo 버전 준비

## @strpc
기존 RPC를 package화

### @strpc/express
express의 middleware + router 결함

## @sammo
게임 전체
- server, client
- gateway_server, gateway_client

@strpc/def/src/clientAPIPathGen.ts

@@ -0,0 +1,38 @@
+export function clientAPIPathGen<T extends object, V>(
+    obj: T,
+    callback: (path: string[], tail: V) => unknown,
+    path: string[] = [],
+): T {
+    const map = new Map<string, unknown>();
+    return new Proxy(obj, {
+        get(target, key) {
+            if(typeof key === 'symbol'){
+                throw new Error('Symbol is not supported');
+            }
+
+            const cachedResult = map.get(key);
+            if(cachedResult !== undefined){
+                return cachedResult;
+            }
+
+            const nextPath = [...path, key];
+
+            let next;
+            if (key in target) {
+                next = target[key as keyof typeof target];
+            }
+            else {
+                throw `${nextPath} is not exists`;
+            }
+
+            if (typeof (next) === 'function') {
+                const result = callback(nextPath, next as V);
+                map.set(key, result);
+                return result;
+            }
+            const result = clientAPIPathGen<object, V>(next as object, callback, nextPath);
+            map.set(key, result);
+            return result;
+        }
+    }) as T;
+}