Add basic cli working with static input

cli.js

@@ -0,0 +1,36 @@
+import { readFile, writeFile } from 'node:fs/promises';
+import { convert } from './magic.js';
+
+async function reader(path){
+    try {
+      const contents = await readFile(path, { encoding: 'utf8' });
+        //   console.log(contents)
+      return contents;
+    } catch (err) {
+      console.error(err.message);
+    }
+}
+
+async function writer(path, content){
+    try {
+      await writeFile(path, content, { encoding: 'utf8' });
+    } catch (err) {
+      console.error(err.message);
+    }
+}
+
+
+function convertForConsole(convertFunction){
+    return async function(filePath){
+        const sourceFile = await reader("./systemd-unit.conf");
+        const converted = convertFunction(sourceFile);
+        await writer("./init.conf", converted.result)
+    }
+}
+
+async function setup(){
+    const convertFunction = convertForConsole(convert)
+    convertFunction();
+}
+
+setup();