link Dimension to 3D geometry

src/Mod/TechDraw/Gui/Resources/TechDraw.qrc

@@ -8,6 +8,7 @@
         <file>icons/Dimension_Length.svg</file>
         <file>icons/Dimension_Radius.svg</file>
         <file>icons/Dimension_Vertical.svg</file>
+        <file>icons/LinkDimension.svg</file>
         <file>icons/Hatch.svg</file>
         <file>icons/Page.svg</file>
         <file>icons/Pages.svg</file>

src/Mod/TechDraw/Gui/Resources/icons/LinkDimension.svg

@@ -0,0 +1,88 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
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+   height="64"
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+         style="stop-color:#0069ff;stop-opacity:1"
+         offset="1" />
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+     id="metadata5826">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
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+</svg>