move into firmware subfolder

Signed-off-by: Peter Siegmund <developer@mars3142.org>

.gitignore

@@ -1,40 +0,0 @@
-# esp-idf
-build/
-managed_components/
-sdkconfig
-sdkconfig.old
-dependencies.lock
-config.env
-kconfigs_projbuild.in
-kconfigs.in
-config/
-
-# cmake
-cmake-build-debug
-CMakeCache.txt
-cmake_install.cmake
-install_manifest.txt
-CMakeFiles/
-CTestTestfile.cmake
-Makefile
-CMakeScripts
-compile_commands.json
-
-# They ignored Idea (Webstorm) completely
-.idea/
-.cache/
-
-# However, they kept the following 4 files version controlled
-.vscode/*
-!.vscode/tasks.json
-!.vscode/launch.json
-!.vscode/extensions.json
-.history/*
-__pycache__
-_deps/
-.cmake/
-.ninja_*
-bin/
-components/**/*.a
-*.ninja
-Testing/*