chore: add "types" conditions for typescript "nodenext" resolver (#20)

* Specify type definitions for tsc node12 imports

* Re-order exports keys to keep "types" first.

Author: willstott101

package.json

@@ -29,10 +29,12 @@
   ],
   "exports": {
     ".": {
+      "types": "./index.d.ts",
       "import": "./dist/index.mjs",
       "require": "./dist/index.js"
     },
     "./lite": {
+      "types": "./index.d.ts",
       "import": "./lite/index.mjs",
       "require": "./lite/index.js"
     },