cmake: raise Clang's expression nesting limit

Clang caps expression nesting at 256. Avendish assembles the module list with
std::tuple_cat, and libstdc++'s tuple constructor folds over every element:

  explicit(!(__is_implicitly_default_constructible_v<_Elements> && ...))

giving one term per module. Once the count passes 256 that stops being a
diagnostic and becomes a hard error:

  tuple:965: fatal error: instantiating fold expression with 330 arguments
             exceeded expression nesting limit

It is at 330 today and only grows as plug-ins are added, so this raises the
ceiling well clear rather than to the next value above the current count.
Costs nothing when the limit is not reached, and GCC has no equivalent cap.

Author: jcelerier

cmake/ScoreConfiguration.cmake

@@ -112,6 +112,8 @@ set(CMAKE_ANDROID_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Android")
 if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
     set(CXX_IS_CLANG True)
 
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fbracket-depth=1024")
+
     if(("${CMAKE_CXX_COMPILER_VERSION}" VERSION_GREATER_EQUAL "16") AND ("${CMAKE_CXX_COMPILER_VERSION}" VERSION_LESS "20") AND LLVM_LIBCXX)
       set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fexperimental-library")
     elseif(APPLE)