feat: add @discordjs/util (#8591)

* feat: add @discordjs/util

* fix: builders test

* refactor: make rest use lazy for ESM import

* chore: make requested changes

* Apply suggestions from code review

Co-authored-by: Parbez <imranbarbhuiya.fsd@gmail.com>
Co-authored-by: A. Román <kyradiscord@gmail.com>

* chore: make requested changes and add tests

* chore: regen lockfile

* test: add type tests

* chore: push missing files

* chore: make requested changes

* chore: update CI stuff

* chore: fix lockfile

* chore: make requested changes

Co-authored-by: Parbez <imranbarbhuiya.fsd@gmail.com>
Co-authored-by: A. Román <kyradiscord@gmail.com>
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

packages/util/tsconfig.eslint.json

@@ -0,0 +1,20 @@
+{
+	"extends": "./tsconfig.json",
+	"compilerOptions": {
+		"allowJs": true
+	},
+	"include": [
+		"**/*.ts",
+		"**/*.tsx",
+		"**/*.js",
+		"**/*.mjs",
+		"**/*.jsx",
+		"**/*.test.ts",
+		"**/*.test.js",
+		"**/*.test.mjs",
+		"**/*.spec.ts",
+		"**/*.spec.js",
+		"**/*.spec.mjs"
+	],
+	"exclude": []
+}