docs: add codecov coverage badge to readmes (#8226)

* docs: add codecov coverage badge to readmes

* docs: fix tab-space consistency

Author: ckohen

Diff for: README.md

@@ -9,6 +9,7 @@
     <a href="https://www.npmjs.com/package/discord.js"><img src="https://img.shields.io/npm/v/discord.js.svg?maxAge=3600" alt="npm version" /></a>
     <a href="https://www.npmjs.com/package/discord.js"><img src="https://img.shields.io/npm/dt/discord.js.svg?maxAge=3600" alt="npm downloads" /></a>
     <a href="https://github.com/discordjs/discord.js/actions"><img src="https://github.com/discordjs/discord.js/actions/workflows/test.yml/badge.svg" alt="Tests status" /></a>
+    <a href="https://codecov.io/gh/discordjs/discord.js" ><img src="https://codecov.io/gh/discordjs/discord.js/branch/main/graph/badge.svg?precision=2" alt="Code coverage" /></a>
   </p>
 </div>
 

Diff for: packages/builders/README.md

@@ -9,6 +9,7 @@
 		<a href="https://www.npmjs.com/package/@discordjs/builders"><img src="https://img.shields.io/npm/v/@discordjs/builders.svg?maxAge=3600" alt="npm version" /></a>
 		<a href="https://www.npmjs.com/package/@discordjs/builders"><img src="https://img.shields.io/npm/dt/@discordjs/builders.svg?maxAge=3600" alt="npm downloads" /></a>
 		<a href="https://github.com/discordjs/discord.js/actions"><img src="https://github.com/discordjs/discord.js/actions/workflows/test.yml/badge.svg" alt="Build status" /></a>
+		<a href="https://codecov.io/gh/discordjs/discord.js" ><img src="https://codecov.io/gh/discordjs/discord.js/branch/main/graph/badge.svg?precision=2&flag=builders" alt="Code coverage" /></a>
 	</p>
 </div>
 

Diff for: packages/collection/README.md

@@ -9,6 +9,7 @@
     <a href="https://www.npmjs.com/package/@discordjs/collection"><img src="https://img.shields.io/npm/v/@discordjs/collection.svg?maxAge=3600" alt="npm version" /></a>
     <a href="https://www.npmjs.com/package/@discordjs/collection"><img src="https://img.shields.io/npm/dt/@discordjs/collection.svg?maxAge=3600" alt="npm downloads" /></a>
     <a href="https://github.com/discordjs/discord.js/actions"><img src="https://github.com/discordjs/discord.js/actions/workflows/test.yml/badge.svg" alt="Build status" /></a>
+    <a href="https://codecov.io/gh/discordjs/discord.js" ><img src="https://codecov.io/gh/discordjs/discord.js/branch/main/graph/badge.svg?precision=2&flag=collection" alt="Code coverage" /></a>
   </p>
 </div>
 

Diff for: packages/proxy/README.md

@@ -9,6 +9,7 @@
     <a href="https://www.npmjs.com/package/@discordjs/proxy"><img src="https://img.shields.io/npm/v/@discordjs/proxy.svg?maxAge=3600" alt="npm version" /></a>
     <a href="https://www.npmjs.com/package/@discordjs/proxy"><img src="https://img.shields.io/npm/dt/@discordjs/proxy.svg?maxAge=3600" alt="npm downloads" /></a>
     <a href="https://github.com/discordjs/discord.js/actions"><img src="https://github.com/discordjs/discord.js/actions/workflows/test.yml/badge.svg" alt="Build status" /></a>
+    <a href="https://codecov.io/gh/discordjs/discord.js" ><img src="https://codecov.io/gh/discordjs/discord.js/branch/main/graph/badge.svg?precision=2&flag=proxy" alt="Code coverage" /></a>
   </p>
 </div>
 

Diff for: packages/rest/README.md

@@ -9,6 +9,7 @@
     <a href="https://www.npmjs.com/package/@discordjs/rest"><img src="https://img.shields.io/npm/v/@discordjs/rest.svg?maxAge=3600" alt="npm version" /></a>
     <a href="https://www.npmjs.com/package/@discordjs/rest"><img src="https://img.shields.io/npm/dt/@discordjs/rest.svg?maxAge=3600" alt="npm downloads" /></a>
     <a href="https://github.com/discordjs/discord.js/actions"><img src="https://github.com/discordjs/discord.js/actions/workflows/test.yml/badge.svg" alt="Tests status" /></a>
+    <a href="https://codecov.io/gh/discordjs/discord.js" ><img src="https://codecov.io/gh/discordjs/discord.js/branch/main/graph/badge.svg?precision=2&flag=rest" alt="Code coverage" /></a>
   </p>
 </div>
 

Diff for: packages/voice/README.md

@@ -9,6 +9,7 @@
 		<a href="https://www.npmjs.com/package/@discordjs/voice"><img src="https://img.shields.io/npm/v/@discordjs/voice.svg?maxAge=3600" alt="npm version" /></a>
 		<a href="https://www.npmjs.com/package/@discordjs/voice"><img src="https://img.shields.io/npm/dt/@discordjs/voice.svg?maxAge=3600" alt="npm downloads" /></a>
 		<a href="https://github.com/discordjs/discord.js/actions"><img src="https://github.com/discordjs/discord.js/actions/workflows/test.yml/badge.svg" alt="Build status" /></a>
+		<a href="https://codecov.io/gh/discordjs/discord.js" ><img src="https://codecov.io/gh/discordjs/discord.js/branch/main/graph/badge.svg?precision=2&flag=voice" alt="Code coverage" /></a>
 	</p>
 </div>