add security docs to lavalink config server

Author: topi314

LavalinkServer/application.yml.cloud-example

@@ -1,15 +1,20 @@
 spring:
   cloud:
     config:
+      # Enable the use of the Config Server
       enabled: true
       # Set the application name here
       name: Lavalink
       # Set profile here (default: default)
       profile: node1
       # Set the label (git branch/commit id/release) (default: main/master)
-      label: main
+      label: master
       # Fail if no config could be found
       fail-fast: true
+      # Set the username for the Config Server
+      username: admin
+      # Set the password for the Config Server
+      password: "youshallnotpass"
   config:
-    # replace http://localhost:8888 with the url to your Lavalink Config Server
+    # Replace http://localhost:8888 with the url to your Lavalink Config Server
     import: "configserver:http://localhost:8888/"

docs/configuration/config/config-server.md

@@ -22,6 +22,8 @@ SPRING_APPLICATION_NAME
 SPRING_CLOUD_CONFIG_PROFILE
 SPRING_CLOUD_CONFIG_LABEL
 SPRING_CLOUD_CONFIG_FAIL_FAST
+SPRING_CLOUD_CONFIG_USERNAME
+SPRING_CLOUD_CONFIG_PASSWORD
 
 SPRING_CONFIG_IMPORT
 ```
@@ -67,9 +69,17 @@ The Lavalink Config Server can be configured to use a git repository or a local
 
 ```yaml title="application.yml"
 spring:
+  security:
+    # Enable basic authentication for the config server
+    enabled: true
+    user:
+      # Set the username to access the config server
+      name: admin
+      # Set the password to access the config server
+      password: "youshallnotpass"
   profiles:
     # Set to native to use a local filesystem/static url
-    active: git
+    active: native
   cloud:
     config:
       server:
@@ -106,6 +116,7 @@ logging:
   level:
     root: INFO
     org.springframework.cloud.config: DEBUG
+
 ```
 
 Alternatively, this can also be done via environment variables:
@@ -114,6 +125,10 @@ Alternatively, this can also be done via environment variables:
 <summary>Environment Variables</summary>
 
 ```bash
+SPRING_SECURITY_ENABLED
+SPRING_SECURITY_USER_NAME
+SPRING_SECURITY_USER_PASSWORD
+
 SPRING_PROFILES_ACTIVE
 
 SPRING_CLOUD_CONFIG_SERVER_ACCEPT_EMPTY