separated clang-tidy for untests

.clang-tidy

@@ -1,3 +1,4 @@
+---
 Checks: '-*,
 
         clang-analyzer-*,
@@ -17,3 +18,4 @@ Checks: '-*,
         -readability-redundant-access-specifiers,
         -readability-use-anyofallof,
         '
+...

untests/.clang-tidy

@@ -0,0 +1,17 @@
+---
+Checks: '-*,
+
+        clang-analyzer-*,
+
+        concurrency-*,
+
+        cppcoreguidelines-*,
+        -cppcoreguidelines-avoid-magic-numbers,
+        -cppcoreguidelines-avoid-non-const-global-variables,
+
+        modernize-*,
+        -modernize-use-trailing-return-type,
+
+        portability-*,
+        '
+...