Unify Tool UI Footer (#12850)

* unify footer
adds "Done" Buttons,
standardize "Reset" Buttons,
adds disabled logic to "Reset" Buttons

* adds ImGuiWrapper::COL_WARNING = ColorRGB:Warning,
replaces ColorRGB::Warning

* consistently display warnings,
moves assermbly warning after footer,
make cut warnings warning color

* adds separator above cut warnings

* adds tooltip entry in move, rotate & scale for auto-drop

* use wrapper tooltip in wrapper->button for consistent text color

* restructures brim ears button,
renames "Reset" button in painting tools to "Erase All",
small styling fixes

* small adjustments,
moves "Edge detection" checkbox in painting tool underneath,
moves "Section View" in Brim ears tool after buttons,
moves warnings in Assemble tool under footer

* small brim ear tool structure changes,
adds separator between "Head Diameter" and "Max angle",
adds tooltip to "Auto-generate" button,
rewords shortcut descriptions to match other tools

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Co-authored-by: Hanno Witzleb <hannowitzleb@gmail.com>

src/slic3r/GUI/ImGuiWrapper.hpp

@@ -349,6 +349,7 @@ public:
     static const ImVec4 COL_SEPARATOR_DARK;
     static const ImVec4 COL_ORCA;
     static const ImVec4 COL_MODIFIED;
+    static const ImVec4 COL_WARNING;
 
     //BBS
     static void on_change_color_mode(bool is_dark);