Add clang-format and clang-tidy to pre-commit hooks

- .pre-commit-config.yaml: Integrate clang-format (v17) and clang-tidy for C/C++ linting
  Excludes build artifacts (.pio), tests, and board configs from linting
- .clang-format: Configure LLVM-style formatting with 4-space indents, 88-char line limit
  Enforces right pointer alignment, comment reflow, consistent brace placement
- .clang-tidy: Configure strict static analysis with snake_case identifiers
  Enables all checks except Fuchsia/LLVM lib checks and abseil checks
  Treats warnings as errors

.clang-tidy

@@ -0,0 +1,24 @@
+---
+Checks: |
+  *,
+  -fuchsia-*,
+  -llvmlibc-*,
+  -abseil-*,
+  -google-readability-braces-around-statements,
+  -readability-braces-around-statements,
+  -readability-implicit-bool-conversion,
+HeaderFilterRegex: 'src/.*\.h'
+WarningsAsErrors: '*'
+CheckOptions:
+  - key: readability-identifier-naming.VariableCase
+    value: snake_case
+  - key: readability-identifier-naming.FunctionCase
+    value: snake_case
+  - key: readability-identifier-naming.MacroDefinitionCase
+    value: UPPER_CASE
+  - key: readability-identifier-naming.EnumConstantCase
+    value: UPPER_CASE
+  - key: modernize-use-auto.MinTypeNameLength
+    value: '8'
+  - key: performance-inefficient-string-concatenation.WarnOnImplicitConversion
+    value: '1'