Cleanup, relocate and split up GuiReplayOverlay

Merge gui resources into one texture

src/main/java/eu/crushedpixel/replaymod/gui/elements/GuiTexturedButton.java

@@ -0,0 +1,38 @@
+package eu.crushedpixel.replaymod.gui.elements;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.Gui;
+import net.minecraft.client.gui.GuiButton;
+import net.minecraft.client.renderer.GlStateManager;
+import net.minecraft.util.ResourceLocation;
+
+public class GuiTexturedButton extends GuiButton {
+    private final ResourceLocation texture;
+    private final int u, v;
+    private final int textureWidth, textureHeight;
+    public GuiTexturedButton(int buttonId, int x, int y, int width, int height, ResourceLocation texture,
+                             int u, int v, int textureWidth, int textureHeight) {
+        super(buttonId, x, y, width, height, "");
+        this.texture = texture;
+        this.u = u;
+        this.v = v;
+        this.textureWidth = textureWidth;
+        this.textureHeight = textureHeight;
+    }
+
+    @Override
+    public void drawButton(Minecraft mc, int mouseX, int mouseY) {
+        if (visible) {
+            hovered = mouseX >= xPosition
+                    && mouseY >= yPosition
+                    && mouseX < xPosition + width
+                    && mouseY < yPosition + height;
+
+            mc.renderEngine.bindTexture(texture);
+
+            GlStateManager.color(1, 1, 1);
+            int u = this.u + (hovered ? width : 0);
+            Gui.drawModalRectWithCustomSizedTexture(xPosition, yPosition, u, v, width, height, textureWidth, textureHeight);
+        }
+    }
+}