make GuiTexture and Texture distinct types

Rather than GuiTexture being a child type of
Texture.

This stops GuiTexture from being used in a place
that Texture would be used by accident.

subprojects/core/src/main/java/net/pixaurora/kit_tunes/impl/ui/texture/AbstractTexture.java

@@ -0,0 +1,10 @@
+package net.pixaurora.kit_tunes.impl.ui.texture;
+
+import net.pixaurora.kit_tunes.api.resource.ResourcePath;
+import net.pixaurora.kit_tunes.impl.ui.math.Size;
+
+public interface AbstractTexture {
+    public ResourcePath path();
+
+    public Size size();
+}

subprojects/core/src/main/java/net/pixaurora/kit_tunes/impl/ui/texture/GuiTexture.java

@@ -4,7 +4,7 @@
 import net.pixaurora.kit_tunes.impl.KitTunes;
 import net.pixaurora.kit_tunes.impl.ui.math.Size;
 
-public interface GuiTexture extends Texture {
+public interface GuiTexture extends AbstractTexture {
     public static GuiTexture of(ResourcePath path, Size size) {
         return new TextureImpl(KitTunes.UI_LAYER.convertToGuiAsset(path), size);
     }

subprojects/core/src/main/java/net/pixaurora/kit_tunes/impl/ui/texture/Texture.java

@@ -5,11 +5,7 @@
 import net.pixaurora.kit_tunes.impl.resource.ResourcePathImpl;
 import net.pixaurora.kit_tunes.impl.ui.math.Size;
 
-public interface Texture {
-    public ResourcePath path();
-
-    public Size size();
-
+public interface Texture extends AbstractTexture {
     public static Texture of(String path, Size size) {
         return of(ResourcePathImpl.fromString(path), size);
     }