Implement move recommendation feature and update game configuration

This commit adds the implementation for the move recommendation feature in the Tic-Tac-Toe game. It also includes updates to the game configuration to support this new feature.

Changes:
- Added "join" to gameState.txt
- Added move recommendation logic to recommend.nr
- Added recommendedMove.json with a sample recommended move
- Updated gameState.json with a sample game state
- Updated package.json to include the "lockfile" dependency
- Updated index.ejs to display the current turn
- Updated style.css to add a new class for winning cells
- Added recommend.js to provide move recommendation service
- Updated index.js to handle game state saving and recommendation retrieval

assets/gameState.json

@@ -0,0 +1,14 @@
+{
+  "gameBoard": [
+    "O",
+    "X",
+    " ",
+    " ",
+    "O",
+    " ",
+    "X",
+    "X",
+    " "
+  ],
+  "currentPlayer": "O"
+}

assets/gameState.txt

@@ -0,0 +1 @@
+join

assets/recommend.nr

@@ -0,0 +1,3 @@
+tumia mtandao
+
+fanya game = mtandao.peruzi("https://lab.breviamlogistics.co.ke/")

assets/recommendedMove.json

@@ -0,0 +1,4 @@
+{
+  "move": 8,
+  "timestamp": "2024-10-05T01:23:30.083Z"
+}

package.json

@@ -13,6 +13,7 @@
     "express": "^4.21.0",
     "helmet": "^8.0.0",
     "http-errors": "~1.6.3",
+    "lockfile": "^1.0.4",
     "morgan": "~1.9.1",
     "socket.io": "^4.8.0"
   },