Separate rendering into its own module

src/main/java/com/replaymod/render/frame/StereoscopicOpenGlFrame.java

@@ -0,0 +1,22 @@
+package com.replaymod.render.frame;
+
+import com.replaymod.render.rendering.Frame;
+import lombok.Getter;
+import org.apache.commons.lang3.Validate;
+
+public class StereoscopicOpenGlFrame implements Frame {
+    @Getter
+    private final OpenGlFrame left, right;
+
+    public StereoscopicOpenGlFrame(OpenGlFrame left, OpenGlFrame right) {
+        Validate.isTrue(left.getFrameId() == right.getFrameId(), "Frame ids do not match.");
+        Validate.isTrue(left.getByteBuffer().remaining() == right.getByteBuffer().remaining(), "Buffer size does not match.");
+        this.left = left;
+        this.right = right;
+    }
+
+    @Override
+    public int getFrameId() {
+        return left.getFrameId();
+    }
+}