Fix various useful clang-tidy warnings

* bugprone-branch-clone
* bugprone-copy-constructor-init
* bugprone-empty-catch
* bugprone-sizeof-expression
* bugprone-switch-missing-default-case
* bugprone-unused-local-non-trivial-variable
* clang-analyzer-core.uninitialized.Assign
* clang-analyzer-cplusplus.Move
* clang-analyzer-optin.cplusplus.VirtualCall
* modernize-loop-convert
* modernize-raw-string-literal
* modernize-use-equals-default
* modernize-use-override
* modernize-use-using
* performance-avoid-endl
* performance-inefficient-string-concatenation
* performance-inefficient-vector-operation
* performance-noexcept-move-constructor
* performance-unnecessary-value-param (and improve generator example)
* readability-duplicate-include
* readability-inconsistent-declaration-parameter-name
* readability-non-const-parameter
* readability-redundant-casting
* readability-redundant-member-init
* readability-redundant-smartptr-get
* readability-static-accessed-through-instance
* unused variable in amalgamted tests

tests/SelfTest/UsageTests/Exception.tests.cpp

@@ -119,7 +119,7 @@ TEST_CASE( "When unchecked exceptions are thrown, but caught, they do not affect
     try {
         throw std::domain_error( "unexpected exception" );
     }
-    catch(...) {}
+    catch(...) {} // NOLINT(bugprone-empty-catch)
 }
 
 
@@ -152,7 +152,7 @@ TEST_CASE( "Custom exceptions can be translated when testing for throwing as som
 }
 
 TEST_CASE( "Unexpected exceptions can be translated", "[.][failing][!throws]"  ) {
-    throw double( 3.14 );
+    throw double( 3.14 ); // NOLINT(readability-redundant-casting): the type is important here, so we want to be explicit
 }
 
 TEST_CASE("Thrown string literals are translated", "[.][failing][!throws]") {