PixelPaint: Rename CreateNewGuideDialog to EditGuideDialog

This doesn't change the behavior at all but sets the naming up be more
descriptive on what it does in the next patches.

Userland/Applications/PixelPaint/EditGuideDialog.gml

@@ -0,0 +1,71 @@
+@GUI::Frame {
+    fill_with_background_color: true
+
+    layout: @GUI::VerticalBoxLayout {
+    }
+
+    @GUI::Widget {
+        layout: @GUI::VerticalBoxLayout {
+            margins: [4]
+        }
+
+        @GUI::GroupBox {
+            title: "Orientation"
+            shrink_to_fit: true
+            
+            layout: @GUI::HorizontalBoxLayout {
+                margins: [20, 10, 10]
+            }
+
+            @GUI::RadioButton {
+                name: "orientation_horizontal_radio"
+                text: "Horizontal"
+            }
+
+            @GUI::RadioButton {
+                name: "orientation_vertical_radio"
+                text: "Vertical"
+            }
+        }
+    }
+
+    @GUI::Widget {
+        layout: @GUI::HorizontalBoxLayout {
+            margins: [4]
+        }
+        shrink_to_fit: true
+
+        @GUI::Label {
+            text: "Offset"
+            text_alignment: "CenterLeft"
+        }
+
+        @GUI::TextBox {
+            name: "offset_text_box"
+        }
+    }
+
+
+    @GUI::Widget {
+        max_height: 24
+
+        layout: @GUI::HorizontalBoxLayout {
+            margins: [4]
+        }
+
+        @GUI::Widget {
+        }
+
+        @GUI::Button {
+            name: "ok_button"
+            text: "OK"
+            max_width: 75
+        }
+
+        @GUI::Button {
+            name: "cancel_button"
+            text: "Cancel"
+            max_width: 75
+        }
+    }
+}