Clang: add clang plugins checks to code model settings

Add UI controls to change settings and apply them
together with warnings and command line options.
Current settings are not very flexible but should be
easy to test and use without reading tidy/clazy help.

Change-Id: I1ca6b49a42a1169b34a703dd50de0bbc105df28f
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>

src/plugins/cpptools/cppcodemodelsettings.h

@@ -72,6 +72,12 @@ public:
     int indexerFileSizeLimitInMb() const;
     void setIndexerFileSizeLimitInMb(int sizeInMB);
 
+    QString tidyChecks() const;
+    void setTidyChecks(QString checks);
+
+    QString clazyChecks() const;
+    void setClazyChecks(QString checks);
+
 public: // for tests
     void emitChanged();
 
@@ -86,6 +92,9 @@ private:
     int m_indexerFileSizeLimitInMB = 5;
     ClangDiagnosticConfigs m_clangCustomDiagnosticConfigs;
     Core::Id m_clangDiagnosticConfigId;
+
+    QString m_tidyChecks;
+    QString m_clazyChecks;
 };
 
 } // namespace CppTools