clang-tidy: Add cppcoreguidelines-pro-type-member-init

Avoid unitialized member variables

Author: ChristianTackeGSI

.clang-tidy

@@ -9,6 +9,8 @@ HeaderFilterRegex: '.*'
 #   Avoid undefined behaviour
 # * cppcoreguidelines-pro-type-cstyle-cast
 #   Avoid C-Style Casts which might be problematic
+# * cppcoreguidelines-pro-type-member-init
+#   Avoid unitialized member variables
 # enable google-build-using-namespace
 #   "using namespace" imports a changing amount of symbols, avoid it
 # improve readability:
@@ -22,6 +24,7 @@ Checks: >-
   -bugprone-unhandled-self-assignment,
   -bugprone-reserved-identifier,
   cppcoreguidelines-pro-type-cstyle-cast,
+  cppcoreguidelines-pro-type-member-init,
   cppcoreguidelines-virtual-class-destructor,
   modernize-make-unique,
   google-build-using-namespace,