Update workflow configurations and build scripts

- Modified GitHub workflow files for dev, stable, and test releases
- Updated platformio.ini and pio_local.ini_example configurations
- Enhanced build_interface.py script functionality

platformio.ini

@@ -98,9 +98,9 @@ build_flags =
 build_unflags = 
   ${common.unbuild_flags}
 extra_scripts =
-  pre:scripts/build_interface.py ; builds the WebUI (unless NO_BUILD_WEBUI is set)
+  ; pre:scripts/build_interface.py ; builds the WebUI
   scripts/rename_fw.py ; renames the firmware .bin file
-  scripts/upload.py ; optionally upload the firmware via OTA (if upload_protocol = custom)
+  ; scripts/upload.py ; optionally upload the firmware via OTA (if upload_protocol = custom)
 monitor_speed = 115200
 monitor_filters = direct
 build_type = release
@@ -111,11 +111,16 @@ lib_deps =
   ESP32Async/ESPAsyncWebServer @ 3.8.1
   https://github.com/emsesp/EMS-ESP-Modules.git @ 1.0.8
 
+
+; builds the web interface only, not the firmware
+[env:build_webUI]
+platform = native
+targets = build
+extra_scripts = post:scripts/build_interface.py
+
 ;
 ; Builds for different board types
 ; We use Tasmota for boards without PSRAM as this framework has mbedtls removed to save memory.
-;
-; Note, if the system environment variable (windows or linux) "NO_BUILD_WEBUI" is set, the WebUI will not be built.
 ; If you're building for a single target environment, we recommend creating a pio_local.ini (see example file)
 ;
 
@@ -273,6 +278,7 @@ test_testing_command =
 # pio run -e build_modbus -t build 
 [env:build_modbus]
 extends = env:native
+targets = build
 extra_scripts = 
   pre:scripts/build_modbus_entity_parameters_pre.py
   post:scripts/build_run_test.py
@@ -286,6 +292,7 @@ custom_post_script = scripts/build_modbus_entity_parameters_post.py
 ; to be run after build_modbus with: pio run -e build_standalone -t clean -t build
 [env:build_standalone]
 extends = env:native
+targets = build
 extra_scripts = 
   post:scripts/build_run_test.py
 build_flags = -DEMSESP_STANDALONE