feat: external config loading

+refactor many pieces

packages/webpack5/src/helpers/dependencies.ts

@@ -0,0 +1,24 @@
+import { getPackageJson, getProjectRootPath } from './project';
+import path from 'path';
+
+export function getAllDependencies(): string[] {
+	const packageJSON = getPackageJson();
+	console.log(packageJSON);
+
+	return [
+		...Object.keys(packageJSON.dependencies ?? {}),
+		...Object.keys(packageJSON.devDependencies ?? {}),
+	];
+}
+
+export function getDependencyPath(dependencyName: string): string | null {
+	try {
+		const resolvedPath = require.resolve(`${dependencyName}/package.json`, {
+			paths: [getProjectRootPath()],
+		});
+
+		return path.dirname(resolvedPath);
+	} catch (err) {
+		return null;
+	}
+}