gCode Legend & Viewer Improvements (#8198)

* commit

* update buttons and icons

* Update GCodeViewer.cpp

* Update GCodeViewer.cpp

* Update GCodeViewer.cpp

* replace invisible item icon

* reduce code changes & add svg icons for hidden / visible

* update

* Update GCodeViewer.cpp

* Update GCodeViewer.cpp

* Update GCodeViewer.cpp

* fix window width when scrollbar visible

* Update GCodeViewer.cpp

* Update GCodeViewer.cpp

* add corner rounding to all plate stats

* Update GCodeViewer.cpp

* update

---------

Co-authored-by: SoftFever <softfeverever@gmail.com>

resources/images/im_code.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16"><line x1="9.5" y1="1.5" x2="6.5" y2="14.5" style="fill:none;stroke:#fff;stroke-linecap:round;stroke-linejoin:round"/><polyline points="12.5 12.5 15.5 8 12.5 3.5" style="fill:none;stroke:#fff;stroke-linecap:round;stroke-linejoin:round"/><polyline points="3.5 3.5 0.5 8 3.5 12.5" style="fill:none;stroke:#fff;stroke-linecap:round;stroke-linejoin:round"/></svg>

resources/images/im_fold.svg

@@ -1 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16"><path d="M2.5,11.5l6-3,6,3m0-5-6-3-6,3" style="fill:none;stroke:#fff;stroke-linecap:round;stroke-linejoin:round"/></svg>
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16"><polyline points="1.5 6.5 8 2.5 14.5 6.5" style="fill:none;stroke:#fff;stroke-linecap:round;stroke-linejoin:round"/><polyline points="1.5 13.5 8 9.5 14.5 13.5" style="fill:none;stroke:#fff;stroke-linecap:round;stroke-linejoin:round"/></svg>

resources/images/im_hidden.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16"><path d="M5.5,3.374A5.893,5.893,0,0,1,7.5,3a7.644,7.644,0,0,1,6.446,4.5,8.7,8.7,0,0,1-1.838,2.487l.717.717a9.687,9.687,0,0,0,2.221-3.2A8.654,8.654,0,0,0,7.5,2a7.069,7.069,0,0,0-2.765.614Z" style="fill:gray"/><path d="M7.5,4a3.464,3.464,0,0,0-1.165.214l4.451,4.451A3.464,3.464,0,0,0,11,7.5,3.5,3.5,0,0,0,7.5,4Z" style="fill:gray"/><path d="M9.505,11.626A5.893,5.893,0,0,1,7.5,12,7.644,7.644,0,0,1,1.054,7.5,8.7,8.7,0,0,1,2.892,5.013L2.175,4.3A9.687,9.687,0,0,0-.046,7.5,8.654,8.654,0,0,0,7.5,13a7.073,7.073,0,0,0,2.765-.614Z" style="fill:gray"/><path d="M7.5,11a3.464,3.464,0,0,0,1.165-.214L4.214,6.335A3.464,3.464,0,0,0,4,7.5,3.5,3.5,0,0,0,7.5,11Z" style="fill:gray"/><path d="M13.5,14a.5.5,0,0,1-.354-.146l-12-12a.5.5,0,0,1,.708-.708l12,12A.5.5,0,0,1,13.5,14Z" style="fill:gray"/></svg>

resources/images/im_unfold.svg

@@ -1 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16"><path d="M14.5,3.5l-6,3-6-3m0,5,6,3,6-3" style="fill:none;stroke:#fff;stroke-linecap:round;stroke-linejoin:round"/></svg>
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16"><polyline points="1.5 2.5 8 6.5 14.5 2.5" style="fill:none;stroke:#fff;stroke-linecap:round;stroke-linejoin:round"/><polyline points="1.5 9.5 8 13.5 14.5 9.5" style="fill:none;stroke:#fff;stroke-linecap:round;stroke-linejoin:round"/></svg>

resources/images/im_visible.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16"><path d="M7.5,3a7.644,7.644,0,0,1,6.446,4.5A7.644,7.644,0,0,1,7.5,12,7.644,7.644,0,0,1,1.054,7.5,7.644,7.644,0,0,1,7.5,3m0-1A8.654,8.654,0,0,0-.046,7.5,8.654,8.654,0,0,0,7.5,13a8.654,8.654,0,0,0,7.546-5.5A8.654,8.654,0,0,0,7.5,2Z" style="fill:#009688"/><path d="M7.5,4A3.5,3.5,0,1,0,11,7.5,3.5,3.5,0,0,0,7.5,4Z" style="fill:#009688"/></svg>