feat: add options for ground snap

Author: TheGamerzs

CodeWalker/App.config

@@ -264,6 +264,12 @@
             <setting name="GTAGen9" serializeAs="String">
                 <value>False</value>
             </setting>
+            <setting name="SnapGroundDown" serializeAs="String">
+                <value>20</value>
+            </setting>
+            <setting name="SnapGroundUp" serializeAs="String">
+                <value>3</value>
+            </setting>
         </CodeWalker.Properties.Settings>
     </userSettings>
   <runtime>

CodeWalker/Properties/Settings.Designer.cs

@@ -255,5 +255,11 @@
     <Setting Name="GTAGen9" Type="System.Boolean" Scope="User">
       <Value Profile="(Default)">False</Value>
     </Setting>
+    <Setting Name="SnapGroundDown" Type="System.Single" Scope="User">
+      <Value Profile="(Default)">20</Value>
+    </Setting>
+    <Setting Name="SnapGroundUp" Type="System.Single" Scope="User">
+      <Value Profile="(Default)">3</Value>
+    </Setting>
   </Settings>
 </SettingsFile>