fix(minecraft-bedrock) add OPS variable + How-To (#4173)

* add OPS variable + docs

* fix how-to

charts/stable/minecraft-bedrock/docs/How-To.md

@@ -0,0 +1,43 @@
+# How To
+
+In order to OP a player through `OPS` variable you will need to get the XUID of the player. You can temporarily join and grab your XUID from the logs.
+
+![console](./imgs/console.png)
+
+To add multiple XUIDS, you can do so by separating each `xuid` by a comma:
+
+![xuids](./imgs/xuids.png)
+
+Or use this 3rd party service [here](https://www.cxkes.me/xbox/xuid) to grab the XUID of the username instead.
+
+:::caution
+
+We have no control over the 3rd service at all. Use it at your own risk.
+
+:::
+
+The `/data/permissions.json` should look something like this:
+
+```json
+[
+  {
+    "permission": "operator",
+    "xuid": "XUID"
+  },
+  {
+    "permission": "operator",
+    "xuid": "XUID"
+  },
+  {
+    "permission": "operator",
+    "xuid": "XUID"
+  }
+]
+```
+
+:::info
+
+- You can also reach us using [Discord](https://discord.gg/tVsPTHWTtr) for real-time feedback and support
+- If you found a bug in our chart, open a Github [issue](https://github.com/truecharts/apps/issues/new/choose) but generally it's advised to contact us on Discord first in most cases.
+
+:::