Configure clang tools and update build settings

- Added `.clang-tidy` with custom checks to enforce code style.
- Created `.clangd` with specific compile flag additions and removals.
- Updated `.gitignore` to include new cache, metadata, and configuration files.
- Updated `platformio.ini`:
  - Bumped `Simple FOC` to version 2.3.4 and `STM32_CAN` to version 1.1.2.
  - Added `gen_compile_commands.py` as an extra script.

controller/fw/embed/gen_compile_commands.py

@@ -0,0 +1,8 @@
+import os
+Import("env")
+
+# include toolchain paths
+env.Replace(COMPILATIONDB_INCLUDE_TOOLCHAIN=True)
+
+# override compilation DB path
+env.Replace(COMPILATIONDB_PATH="compile_commands.json")