languages: Recognize module interface file as C++ file (#45968)

Haojian Wu created 

https://clang.llvm.org/docs/StandardCPlusPlusModules.html#file-name-requirements,
`.cppm`, '.ccm', ".cxxm" files are C++20 module interface files.

Release Notes:

- Recognize module interface file as C++ file.

Change summary

crates/languages/src/cpp/config.toml | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Detailed changes

crates/languages/src/cpp/config.toml 🔗 

@@ -1,6 +1,6 @@
 name = "C++"
 grammar = "cpp"
-path_suffixes = ["cc", "hh", "cpp", "cppm", "h", "hpp", "cxx", "hxx", "c++", "h++", "ipp", "inl", "ino", "ixx", "cu", "cuh", "C", "H"]
+path_suffixes = ["cc", "ccm", "hh", "cpp", "cppm", "h", "hpp", "cxx", "cxxm", "hxx", "c++", "c++m", "h++", "ipp", "inl", "ino", "ixx", "cu", "cuh", "C", "H"]
 line_comments = ["// ", "/// ", "//! "]
 first_line_pattern = '^//.*-\*-\s*C\+\+\s*-\*-'
 decrease_indent_patterns = [