add file read and write to zsh

data/zsh.json

@@ -1,5 +1,15 @@
 {
   "functions": {
+    "file-read": [
+      {
+        "code": "zsh -c 'echo \"$(<[file])\"'\n"
+      }
+    ],
+    "file-write": [
+      {
+        "code": "zsh -c 'echo [data] >[file]'\n"
+      }
+    ],
     "shell": [
       {
         "code": "zsh"
@@ -16,4 +26,4 @@
       }
     ]
   }
-}
+}