fix: add hatchling as dependency

Author: agoose77

pyproject.toml

@@ -9,7 +9,9 @@ description = "Hatch plugin for versioning from a package.json file"
 authors = [
     {name = "Angus Hollands", email = "[email protected]"},
 ]
-dependencies = []
+dependencies = [
+    "hatchling>=0.21.0"
+]
 requires-python = ">= 3.7"
 readme = "README.md"
 license = {text = "MIT"}