Add polygon file readers and make sure UI items are in sync

* Add polygon reader for POL file format
* Add CSV import
* Add helper function to create tag with color and text
* Show polygon color as tag, allow color edit by clicking on tag
* Support optional header in csv file
* Add Reload on polygon file
* Show warning icon if no polygons
* Improve logging text
* Do not show file polygon in view if no polygons are imported
* Use appendMenuItems
* Set default polygon color to orange
* Enter edit state when creating a new polygon
* Fix missing UI text in menu builder

ApplicationExeCode/Resources/ResInsight.qrc

@@ -286,6 +286,7 @@
         <file>decline-curve.svg</file>
         <file>regression-curve.svg</file>
         <file>padlock.svg</file>
+        <file>warning.svg</file>
     </qresource>
     <qresource prefix="/Shader">
         <file>fs_CellFace.glsl</file>

ApplicationExeCode/Resources/warning.svg

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?><!-- Uploaded to: SVG Repo, www.svgrepo.com, Generator: SVG Repo Mixer Tools -->
+<svg width="800px" height="800px" viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg"><title>ionicons-v5-r</title><path d="M85.57,446.25H426.43a32,32,0,0,0,28.17-47.17L284.18,82.58c-12.09-22.44-44.27-22.44-56.36,0L57.4,399.08A32,32,0,0,0,85.57,446.25Z" style="fill:none;stroke:#000000;stroke-linecap:round;stroke-linejoin:round;stroke-width:32px"/><path d="M250.26,195.39l5.74,122,5.73-121.95a5.74,5.74,0,0,0-5.79-6h0A5.74,5.74,0,0,0,250.26,195.39Z" style="fill:none;stroke:#000000;stroke-linecap:round;stroke-linejoin:round;stroke-width:32px"/><path d="M256,397.25a20,20,0,1,1,20-20A20,20,0,0,1,256,397.25Z"/></svg>