chore: Fix build of open-lens

- Remove need for using relative paths during build

Signed-off-by: Sebastian Malton <sebastian@malton.name>

open-lens/build/installer.nsh

@@ -0,0 +1,15 @@
+!macro customInit
+  ; Make sure all old extensions are removed
+  RMDir /r "$INSTDIR\resources\extensions"
+
+  ; Workaround for installer handing when the app directory is removed manually
+  ${ifNot} ${FileExists} "$INSTDIR"
+    DeleteRegKey HKCU "Software\Microsoft\Windows\CurrentVersion\Uninstall\{${UNINSTALL_APP_KEY}}"
+  ${EndIf}
+
+  ; Workaround for the old-format uninstall registry key (some people report it causes hangups, too)
+  ReadRegStr $0 HKCU "Software\Microsoft\Windows\CurrentVersion\Uninstall\${UNINSTALL_APP_KEY}" "QuietUninstallString"
+  StrCmp $0 "" proceed 0
+  DeleteRegKey HKCU "Software\Microsoft\Windows\CurrentVersion\Uninstall\${UNINSTALL_APP_KEY}"
+  proceed:
+!macroend