Bump version to 2.1.0

Author: jesserockz

library.json

@@ -10,10 +10,13 @@
     "type": "git",
     "url": "https://github.com/esphome/AsyncTCP.git"
   },
-  "version": "2.0.1",
+  "version": "2.1.0",
   "license": "LGPL-3.0",
   "frameworks": "arduino",
-  "platforms": ["espressif32", "libretiny"],
+  "platforms": [
+    "espressif32",
+    "libretiny"
+  ],
   "build": {
     "libCompatMode": 2
   }