BIM: Added missing resource for welcome screen

src/Mod/BIM/Resources/Arch.qrc

@@ -152,6 +152,7 @@
         <file>icons/Part_document.svg</file>
         <file>icons/Sketch.svg</file>
         <file>icons/Tree_Part.svg</file>
+        <file>icons/banner.png</file>
         <file>icons/preferences-arch.svg</file>
         <file>icons/techdraw-ArchView.svg</file>
         <file>icons/techdraw-PageDefault.svg</file>

src/Mod/BIM/Resources/create_qrc.py

@@ -8,7 +8,7 @@ for subdir in ["icons", "ui", "translations"]:
     for f in sorted(os.listdir(subpath)):
         if f not in ["Arch.ts", "BIM.ts"]:
             ext = os.path.splitext(f)[1]
-            if ext.lower() in [".qm", ".svg", ".ui"]:
+            if ext.lower() in [".qm", ".svg", ".ui", ".png"]:
                 txt += "        <file>" + subdir + "/" + f + "</file>\n"
 txt += "    </qresource>\n</RCC>\n"
 with open(os.path.join(cdir, "Arch.qrc"), "w") as resfile: