Added gui classes and some textures from Create.

src/main/resources/assets/effortlessbuilding/textures/gui/license.txt

@@ -0,0 +1,12 @@
+display_link.png, icons.png and widgets.png within this folder fall under the MIT license.
+
+The MIT License Copyright (c) <year> <copyright holders> Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the
+following conditions: The above copyright notice and this permission notice shall be included in all copies or
+substantial portions of the Software.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.