Create examples/advanced/ (#1768)

* Create README.md

* Create chest_confirm.md

* Create accept_texturepack.md

examples/advanced/README.md

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+# Advanced examples
+
+These are examples that have a very specific use-case, and most people won't need.

examples/advanced/accept_texturepack.md

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+# Accept server's texturepack
+
+This code snippet tells the server that the client accepted a custom texture pack when the server sends a texture pack
+
+```js
+bot._client.on('resource_pack_send', (data) => {
+  bot._client.write('resource_pack_receive', {
+    result: 3
+  })
+  bot._client.write('resource_pack_receive', {
+    result: 0
+  })
+})
+```

examples/advanced/chest_confirm.md

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+# Menual Chest Confirm
+
+This code snippet will tell the bot not to wait for chest confirmations that some spigot plugins will not send
+
+```js
+bot.on('windowOpen', async (window) => {
+  window.requiresConfirmation = false // fix
+  await bot.clickWindow(13, 0, 0)
+  console.log(bot._events) // without the fix this code is unreachable, the promise never resolve
+})
+bot.on('windowClose', () => {
+  console.log(bot._events) // without the fix there is a confirmTransaction1 listener that is never removed
+})
+```