feat: separate db models from server

packages/models/command.js

@@ -0,0 +1,33 @@
+import { model, Schema } from 'mongoose'
+
+const Command = model(
+  'Command',
+  new Schema(
+    {
+      session: {
+        type: Schema.ObjectId,
+        ref: 'Session',
+        required: true,
+      },
+      pwd: {
+        type: String,
+        required: true,
+      },
+      command: {
+        type: String,
+        required: true,
+      },
+      output: {
+        type: String,
+        required: false,
+      },
+      error: {
+        type: String,
+        required: false,
+      },
+    },
+    { timestamps: true }
+  )
+)
+
+export default Command