better documentation layout

- seperated the 2000+ lines in ReadMe.md into seperate files.
 - useful if things expand
 - better readability for users
 - more organised layout

documentation/main_functions/metahandlers.md

@@ -0,0 +1,32 @@
+### metaHandlers.lua
+
+This module provides access and control over player metadata, which is useful for storing temporary or persistent player-specific values like stats, states, or tags.
+
+- **GetPlayer(source)**
+
+  ⚠️ Server side only
+  - Retrieves the player object (as defined by the framework in use) from the given `source` ID.
+  - **Example:**
+    ```lua
+    local player = GetPlayer(playerId)
+    ```
+
+- **GetMetadata(player, key)**
+
+  - Retrieves the value of a metadata field from the given player.
+  - If called client-side (player is nil), it triggers a server callback to retrieve metadata.
+  - **Example:**
+    ```lua
+    local stress = GetMetadata(player, "stress")
+    print("Player stress level:", stress)
+    ```
+
+- **SetMetadata(player, key, value)**
+
+  ⚠️ Server side only
+  - Updates or assigns a value to a specific metadata key for a player.
+  - The function updates the player's metadata using the active core export.
+  - **Example:**
+    ```lua
+    SetMetadata(player, "stress", 0)
+    ```