Libcbor integrate

.clang-tidy

@@ -1,7 +1,7 @@
 ---
 Checks:          'clang-diagnostic-*,clang-analyzer-*,readability-*,modernize-*,bugprone-*,misc-*,google-runtime-int,llvm-header-guard,fuchsia-restrict-system-includes,-clang-analyzer-valist.Uninitialized,-clang-analyzer-security.insecureAPI.rand,-clang-analyzer-alpha.*,-readability-magic-numbers,-readability-non-const-parameter,-readability-avoid-const-params-in-decls,-readability-else-after-return,-readability-isolate-declaration,-readability-uppercase-literal-suffix,-bugprone-sizeof-expression,-bugprone-easily-swappable-parameters,-readability-identifier-length,-misc-no-recursion,-readability-function-cognitive-complexity,-readability-magic-numbers'
 WarningsAsErrors: '*'
-HeaderFilterRegex: '.*\.[h|inl]$'
+HeaderFilterRegex: '^(?!.*external).*\.[h|inl]$'
 FormatStyle: 'file'
 CheckOptions:
   - key:             readability-braces-around-statements.ShortStatementLines