chore: enable node to run the output of tsc without modification

.gitignore

@@ -1 +1,3 @@
 *~
+node_modules
+obj/**/*.js

obj/package.json

@@ -0,0 +1 @@
+{ "type": "module" }

src/steps/one.ts

@@ -1,4 +1,4 @@
-import { useTypes } from 'over.ts/src/index';
+import { useTypes } from 'over.ts/src/index.js';
 
 const types = {
    number: (x: unknown): x is number => typeof x === 'number',

tsconfig.json

@@ -1,7 +1,9 @@
 {
     "compilerOptions": {
         "target": "ES2022",
-        "moduleResolution": "node"
+        "moduleResolution": "node",
+        "rootDir": "src",
+        "outDir": "obj"
     },
     "files": [
         "src/steps/one.ts"