chore: unify building system with Makefile (#398)

* reorder and extend platformio config

* update gitignore

* add processing extra_script

* add makefile

* update github workflow

* update docker build

* add release and debug targets

* define custom_build debug

* fix custom_build target

* update README

.gitignore

@@ -11,3 +11,8 @@ webflash/*.bin
 .pio
 .vscode
 .project
+
+# Python venv
+/pyvenv.cfg
+/lib64
+/lib/python3*