Merge branch 'try_clang_analyser' into 'master'

Enable clang-analyser in clang-tidy

See merge request OpenMW/openmw!2171

.clang-tidy

@@ -1,8 +1,10 @@
----
+Checks: >
-Checks: "-*,
+  -*,
-         boost-*,
+  boost-*,
-         portability-*,
+  portability-*,
-"
+  clang-analyzer-*,
-WarningsAsErrors: ''
+  -clang-analyzer-optin*,
-HeaderFilterRegex: ''
+  -clang-analyzer-cplusplus.NewDeleteLeaks,
-FormatStyle: none
+  -clang-analyzer-core.CallAndMessage
+WarningsAsErrors: true
+HeaderFilterRegex: '^(apps|components)'