Support tiling windows in a single direction (horz or vert) (#14754)

* Support tiling windows in a single direction (horz or vert)

ApplicationExeCode/Resources/ResInsight.qrc

@@ -245,7 +245,9 @@
         <file>ObjectiveFunctionWeight.svg</file>
         <file>CellFilter_UserDefined.png</file>
         <file>CellFilter_Polygon.png</file>
-        <file>undo.png</file>
+		<file>TileVertically.svg</file>
+		<file>TileHorizontally.svg</file>
+		<file>undo.png</file>
         <file>redo.png</file>
         <file>ComboBoxDown.svg</file>
         <file>ComboBoxUp.svg</file>

ApplicationExeCode/Resources/TileHorizontally.svg

@@ -0,0 +1,33 @@
+<svg xmlns="http://www.w3.org/2000/svg"
+     viewBox="0 0 24 24"
+     width="24"
+     height="24">
+
+  <defs>
+    <linearGradient id="leftGrad" x1="0" y1="0" x2="1" y2="1">
+      <stop offset="0%" stop-color="#60a5fa"/>
+      <stop offset="100%" stop-color="#2563eb"/>
+    </linearGradient>
+
+    <linearGradient id="rightGrad" x1="0" y1="0" x2="1" y2="1">
+      <stop offset="0%" stop-color="#34d399"/>
+      <stop offset="100%" stop-color="#059669"/>
+    </linearGradient>
+  </defs>
+
+  <rect x="2" y="3" width="20" height="18" rx="3"
+        fill="#ffffff"
+        stroke="#cbd5e1"
+        stroke-width="1"/>
+
+  <rect x="4" y="5" width="7.5" height="14" rx="1.5"
+        fill="url(#leftGrad)"/>
+
+  <rect x="12.5" y="5" width="7.5" height="14" rx="1.5"
+        fill="url(#rightGrad)"/>
+
+  <rect x="5" y="6" width="3" height="1" rx="0.5"
+        fill="rgba(255,255,255,.9)"/>
+  <rect x="13.5" y="6" width="3" height="1" rx="0.5"
+        fill="rgba(255,255,255,.9)"/>
+</svg>

ApplicationExeCode/Resources/TileVertically.svg

@@ -0,0 +1,37 @@
+<svg xmlns="http://www.w3.org/2000/svg"
+     viewBox="0 0 24 24"
+     width="24"
+     height="24">
+
+  <defs>
+    <linearGradient id="topGrad" x1="0" y1="0" x2="1" y2="1">
+      <stop offset="0%" stop-color="#60a5fa"/>
+      <stop offset="100%" stop-color="#2563eb"/>
+    </linearGradient>
+
+    <linearGradient id="bottomGrad" x1="0" y1="0" x2="1" y2="1">
+      <stop offset="0%" stop-color="#34d399"/>
+      <stop offset="100%" stop-color="#059669"/>
+    </linearGradient>
+  </defs>
+
+  <!-- Outer frame -->
+  <rect x="2" y="3" width="20" height="18" rx="3"
+        fill="#ffffff"
+        stroke="#cbd5e1"
+        stroke-width="1"/>
+
+  <!-- Top window -->
+  <rect x="4" y="5" width="16" height="6.5" rx="1.5"
+        fill="url(#topGrad)"/>
+
+  <!-- Bottom window -->
+  <rect x="4" y="12.5" width="16" height="6.5" rx="1.5"
+        fill="url(#bottomGrad)"/>
+
+  <!-- Title bars -->
+  <rect x="5" y="6" width="3" height="1" rx="0.5"
+        fill="white" opacity="0.9"/>
+  <rect x="5" y="13.5" width="3" height="1" rx="0.5"
+        fill="white" opacity="0.9"/>
+</svg>