Huge code cleanup, Architectury & Watermedia

- A huge cleanup of the codebase
- Make use of the Architectury build system
- Replaced VideoLib with WATERMeDIA (More features, better stability, multiplatform support)

common/src/main/java/eu/midnightdust/picturesign/PictureSignClient.java

@@ -0,0 +1,26 @@
+package eu.midnightdust.picturesign;
+
+import eu.midnightdust.lib.util.PlatformFunctions;
+import eu.midnightdust.picturesign.config.PictureSignConfig;
+import net.minecraft.client.option.KeyBinding;
+import net.minecraft.client.util.InputUtil;
+import net.minecraft.util.Identifier;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.lwjgl.glfw.GLFW;
+
+public class PictureSignClient {
+    public static Logger LOGGER = LogManager.getLogger("PictureSign");
+    public static String MOD_ID = "picturesign";
+    public static final boolean hasWaterMedia = PlatformFunctions.isModLoaded("watermedia");
+    public static String[] clipboard = new String[4];
+    public static final KeyBinding BINDING_COPY_SIGN = new KeyBinding("key."+MOD_ID+".copy_sign",
+            InputUtil.Type.KEYSYM, GLFW.GLFW_KEY_U, "key.categories."+MOD_ID);
+
+    public static void init() {
+        PictureSignConfig.init(MOD_ID, PictureSignConfig.class);
+    }
+    public static Identifier id(String path) {
+        return Identifier.of(MOD_ID, path);
+    }
+}