Specify minimum node version number (#787)

* Specify minimum node version number

* Add .npmrc

Author: benmccann

Diff for: .changeset/purple-windows-wink.md

@@ -0,0 +1,6 @@
+---
+'create-svelte': patch
+'@sveltejs/kit': patch
+---
+
+Specify minimum Node version number in @sveltejs/kit and add .npmrc to enforce it

Diff for: packages/create-svelte/template/.npmrc

@@ -0,0 +1 @@
+engine-strict=true

Diff for: packages/create-svelte/template/package.json

@@ -12,8 +12,5 @@
 		"svelte": "^3.29.0",
 		"vite": "^2.1.0"
 	},
-	"type": "module",
-	"engines": {
-		"node": ">= 12.17.0"
-	}
+	"type": "module"
 }

Diff for: packages/kit/package.json

@@ -70,5 +70,8 @@
 		},
 		"./types.d.ts": "./types.d.ts"
 	},
-	"types": "types.d.ts"
+	"types": "types.d.ts",
+	"engines": {
+		"node": ">= 12.17.0"
+	}
 }