added rewards configuration

docs/guilds/configuration/rewards-config.md

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+---
+sidebar_position: 7
+---
+
+# Rewards Config
+
+## File location
+
+The main configuration file is located in `plugins/Guilds/rewards.yml`.
+
+## Editing the file
+
+Here you can find all the information regarding the configuration of the file:
+
+```yaml title="rewards.yml"
+tags:
+
+  # The ID are used to identify the rewards
+  red:
+
+    # The TAG color of the reward
+    color: RED
+
+    # The display name of the reward
+    display-name: '&cRed'
+
+    # The conditions to get the reward
+    # Format: <TYPE>:<VALUE>
+    #
+    # Below are the available conditions
+    conditions:
+      - RANK:MASTER
+      - MC_PERMISSION:guilds.mvp++
+
+  blue:
+    color: BLUE
+    display-name: '&1Blue'
+    conditions:
+      - RANK:admin
+      - MC_PERMISSION:guilds.mvp++
+```
+
+## Conditions
+
+The conditions are used to check if the player can get the reward. The format is `<TYPE>:<VALUE>`. 
+Here are the current available conditions:
+
+Other conditions can be added in the future.
+It's possible to request a new condition by joining our [Discord](https://pixelstudios.dev/discord).
+
+
+| Condition ID  | Description                  | Example                  |
+|---------------|------------------------------|--------------------------|
+| RANK          | Guild rank                   | MASTER / DEFAULT / admin |
+| MC_PERMISSION | Minecraft default permission | guilds.mvp++             |