make.py: allow using custom boards without .toml (classic MicroPython workflow)

builder/esp32: fix frozen manifest generation for external MCU-specific drivers
(e.g. st7796, ft6x36, etc.) and *_api_gen_mpy.py files.

.gitignore: update to exclude generated files and external libraries

Author: carylhubin

.gitignore

@@ -6,7 +6,21 @@ __pycache__/
 # C extensions
 *.so
 
+# generated files
+gen/api_gen/templates/module.c
+gen/api_gen/templates/module/decl.c
+gen/api_gen/templates/module/helpers.c
+ext_mod/lvgl/lextab.py
+ext_mod/lvgl/yacctab.py
+lvgl.pyi
+
 # Distribution / packaging
+lib/micropython
+lib/esp-idf
+lib/lvgl
+lib/pycparser
+lib/SDL
+
 .Python
 build/
 develop-eggs/

builder/esp32.py

@@ -1339,8 +1339,6 @@ def update_main():
 
 
 def build_sdkconfig(*args):
-    if custom_board_path is not None:
-        return []
 
     base_config = [
         '',
@@ -1411,10 +1409,13 @@ def build_sdkconfig(*args):
                     base_config.append(
                         f'CONFIG_ESPTOOLPY_FLASH_SAMPLE_MODE_{itm}=n'
                     )
-
+    
             base_config.append(arg)
             args.remove(arg)
 
+        elif arg.startswith("--"):
+            args.remove(arg)
+
     base_config.append(f'CONFIG_ESPTOOLPY_FLASHSIZE_{flash_size}MB=y')
     base_config.append(''.join([
         'CONFIG_PARTITION_TABLE_CUSTOM_FILENAME=',