[Minimap] Finish off the minimap feature with the rest of the icons

Refs diff: https://code.wildfiregames.com/D4513
Refs #26592

This was SVN commit r26600.

binaries/data/mods/public/simulation/templates/template_gaia_ore.xml

@@ -12,6 +12,7 @@
   <Minimap>
     <Type>metal</Type>
     <Color r="227" g="159" b="12"/>
+    <Icon size="32.0">metal.png</Icon>
   </Minimap>
   <Obstruction>
     <Static width="7.0" depth="7.0"/>

binaries/data/mods/public/simulation/templates/template_gaia_rock.xml

@@ -12,6 +12,7 @@
   <Minimap>
     <Type>stone</Type>
     <Color r="170" g="170" b="170"/>
+    <Icon size="32.0">stone.png</Icon>
   </Minimap>
   <Obstruction>
     <Static width="7.0" depth="7.0"/>

binaries/data/mods/public/simulation/templates/template_structure_civic_civil_centre.xml

@@ -86,7 +86,7 @@
   </Loot>
   <Minimap>
     <Type>structure</Type>
-    <Icon size="16.0">civil_centre.png</Icon>
+    <Icon size="32.0">civil_centre.png</Icon>
   </Minimap>
   <Obstruction>
     <Static depth="30.0" width="30.0"/>

binaries/data/mods/public/simulation/templates/template_structure_wonder.xml

@@ -47,6 +47,10 @@
     <stone>300</stone>
     <metal>200</metal>
   </Loot>
+  <Minimap>
+    <Type>structure</Type>
+    <Icon size="32.0">wonder.png</Icon>
+  </Minimap>
   <Obstruction>
     <Static width="30.0" depth="30.0"/>
   </Obstruction>

binaries/data/mods/public/simulation/templates/template_unit_catafalque.xml

@@ -21,7 +21,7 @@
     <Undeletable>true</Undeletable>
   </Identity>
   <Minimap>
-    <Color r="148" g="0" b="211"/>
+    <Icon size="32.0">relic.png</Icon>
   </Minimap>
   <Position>
     <Anchor>pitch-roll</Anchor>