replace auto-gen of XLS doc files and Modbus with python

platformio.ini

@@ -175,6 +175,7 @@ board = seeed_xiao_esp32c6
 build_flags =
   ${common.build_flags}
   -DBOARD_C6
+
 ; 
 ; Building and testing natively, standalone without an ESP32.
 ; See https://docs.platformio.org/en/latest/platforms/native.html
@@ -193,15 +194,12 @@ build_flags =
 ;
 [env:native]
 platform = native
-extra_scripts =
-build_flags =
+build_type = debug
+build_src_flags =
   -DARDUINOJSON_ENABLE_ARDUINO_STRING=1
   -DEMSESP_STANDALONE -DEMSESP_TEST
   -DEMSESP_DEFAULT_LOCALE=\"en\" -DEMSESP_DEFAULT_TX_MODE=8 -DEMSESP_DEFAULT_VERSION=\"3.7.3-dev.0\" -DEMSESP_DEFAULT_BOARD_PROFILE=\"S32\"
   -std=gnu++17 -Og -ggdb
-build_unflags = -std=gnu++11 -std=gnu++14
-build_type = debug
-build_src_flags =
   -Wall -Wextra
   -Wno-unused-parameter -Wno-sign-compare -Wno-missing-braces
   -I./src/core
@@ -232,7 +230,6 @@ lib_deps =
 ;  then re-run and capture the output between "START - CUT HERE" and "END - CUT HERE" into the test_api.h file
 [env:native-test]
 platform = native
-extra_scripts =
 test_build_src = true
 build_flags =
   ; -DEMSESP_UNITY_CREATE
@@ -271,3 +268,28 @@ lib_ldf_mode = off
 lib_deps = Unity
 test_testing_command =
   ${platformio.build_dir}/${this.__env__}/program
+
+# builds the modbus_entity_parameters.hpp header file
+# pio run -e build_modbus -t build 
+[env:build_modbus]
+extends = env:native
+extra_scripts = 
+  pre:scripts/build_modbus_entity_parameters_pre.py
+  post:scripts/build_run_test.py
+build_flags = -DEMSESP_MODBUS
+custom_test_command = entity_dump
+custom_output_file = dump_entities.csv
+custom_post_script = scripts/build_modbus_entity_parameters_post.py
+
+; builds the real dump_entities.csv and dump_telegrams.csv files
+; and the Modbus-Entity-Registers.md file
+; to be run after build_modbus with: pio run -e build_standalone -t clean -t build
+[env:build_standalone]
+extends = env:native
+extra_scripts = 
+  post:scripts/build_run_test.py
+build_flags = -DEMSESP_STANDALONE
+custom_test_command = entity_dump
+custom_output_file = dump_entities.csv
+custom_post_script = scripts/build_modbus_generate_doc_post.py
+