Support bitand and bitor in REQUIRE/CHECK

This means that bit-flag-like types with conversion to bool can be
asserted on, like so `REQUIRE(var & Flags::AddNewline)`.

tests/SelfTest/Baselines/sonarqube.sw.approved.txt

@@ -396,6 +396,7 @@ Class.tests.cpp:<line number>
     <testCase name="#809" duration="{duration}"/>
     <testCase name="#833" duration="{duration}"/>
     <testCase name="#872" duration="{duration}"/>
+    <testCase name="Assertion macros support bit operators and bool conversions" duration="{duration}"/>
     <testCase name="Lambdas in assertions" duration="{duration}"/>
     <testCase name="Optionally static assertions" duration="{duration}"/>
   </file>