*: add .clang-tidy

.clang-tidy

+# Don't care about deprecated APIs (noisy) and about memcpy/strcpy (we'll fix
+# that later).
+Checks: '-clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling,-clang-diagnostic-deprecated-declarations'

components/micropython/.clang-tidy

+# Disable all checks for Micropython (noise)
+# But we need at least one check defined otherwise clang-tidy is unhappy, so we
+# pick something arbitrary.
+Checks: '-*,portability-simd-intrinsics'

components/tinyusb/.clang-tidy

+# Disable all checks for TinyUSB (noise)
+# But we need at least one check defined otherwise clang-tidy is unhappy, so we
+# pick something arbitrary.
+Checks: '-*,portability-simd-intrinsics'