Slightly change icons in isle-config for si loader extension (#668)

* Begin work on adding SI extension to cfg tool

* Finish work on adding `si loader` extension

* Add tooltip

* Replace symbols with unicode, other misc fixes

* Update "version" to 2.0, other small CLI changes

* Replace icons, other misc small changes

* Slightly reduce button size

CONFIG/res/add.svg

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   viewBox="0 0 16 16"
+   version="1.1"
+   id="svg1"
+   sodipodi:docname="add.svg"
+   inkscape:version="1.4.2 (ebf0e940d0, 2025-05-08)"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <sodipodi:namedview
+     id="namedview1"
+     pagecolor="#505050"
+     bordercolor="#eeeeee"
+     borderopacity="1"
+     inkscape:showpageshadow="0"
+     inkscape:pageopacity="0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#505050"
+     inkscape:zoom="21.496181"
+     inkscape:cx="-4.2333101"
+     inkscape:cy="11.141514"
+     inkscape:window-width="1920"
+     inkscape:window-height="1008"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg1" />
+  <defs
+     id="defs3051">
+    <style
+       type="text/css"
+       id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#232629;
+      }
+      </style>
+  </defs>
+  <path
+     style="fill:#27ae60;fill-opacity:1;stroke:none;stroke-width:0.999911"
+     d="M 7,3 V 8 H 2 v 1 h 5 v 5 H 8 V 9 h 5 V 8 H 8 V 3 Z"
+     class="ColorScheme-Text"
+     id="path1"
+     sodipodi:nodetypes="ccccccccccccc" />
+</svg>

CONFIG/res/config.qrc

@@ -1,7 +1,9 @@
 <RCC>
-    <qresource prefix="/">
+  <qresource prefix="/">
-        <file>shark.png</file>
+    <file>add.svg</file>
-        <file>lego1.png</file>
+    <file>remove.svg</file>
-        <file>lego2.png</file>
+    <file>shark.png</file>
-    </qresource>
+    <file>lego1.png</file>
-</RCC>
+    <file>lego2.png</file>
+  </qresource>
+</RCC>

CONFIG/res/maindialog.ui

@@ -1145,23 +1145,24 @@ The game will gradually increase the number of actors until this maximum is reac
                       <property name="enabled">
                        <bool>false</bool>
                       </property>
-                      <property name="maximumSize">
+                      <property name="minimumSize">
                        <size>
-                        <width>30</width>
+                        <width>28</width>
-                        <height>30</height>
+                        <height>28</height>
                        </size>
                       </property>
-                      <property name="font">
+                      <property name="maximumSize">
-                       <font>
+                       <size>
-                        <pointsize>13</pointsize>
+                        <width>28</width>
-                        <stylestrategy>NoAntialias</stylestrategy>
+                        <height>28</height>
-                       </font>
+                       </size>
                       </property>
                       <property name="toolTip">
                        <string>Add path.</string>
                       </property>
-                      <property name="text">
+                      <property name="icon">
-                       <string>＋</string>
+                       <iconset resource="config.qrc">
+                        <normaloff>:/add.svg</normaloff>:/add.svg</iconset>
                       </property>
                      </widget>
                     </item>
@@ -1185,22 +1186,24 @@ Double-click a path to edit it.</string>
                       <property name="enabled">
                        <bool>false</bool>
                       </property>
-                      <property name="maximumSize">
+                      <property name="minimumSize">
                        <size>
-                        <width>30</width>
+                        <width>28</width>
-                        <height>30</height>
+                        <height>28</height>
                        </size>
                       </property>
-                      <property name="font">
+                      <property name="maximumSize">
-                       <font>
+                       <size>
-                        <pointsize>12</pointsize>
+                        <width>28</width>
-                       </font>
+                        <height>28</height>
+                       </size>
                       </property>
                       <property name="toolTip">
                        <string>Remove path.</string>
                       </property>
-                      <property name="text">
+                      <property name="icon">
-                       <string>✕</string>
+                       <iconset resource="config.qrc">
+                        <normaloff>:/remove.svg</normaloff>:/remove.svg</iconset>
                       </property>
                      </widget>
                     </item>

CONFIG/res/remove.svg

@@ -0,0 +1,10 @@
+<svg version="1.1" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg">
+    <style
+        type="text/css"
+        id="current-color-scheme">
+        .ColorScheme-NegativeText {
+            color:#da4453;
+        }
+    </style>
+    <path class="ColorScheme-NegativeText" d="M 2.6992188,2 2,2.6992188 7.3007812,8 2,13.300781 C 2,13.300781 2.7082187,13.995 2.6992188,14 L 8,8.6992188 13.300781,14 C 13.291781,13.995 14,13.300781 14,13.300781 L 8.6992188,8 14,2.6992188 13.300781,2 8,7.3007812 Z" fill="currentColor"/>
+</svg>