[lldb][Language] Make SourceLanguage::GetDescription for language version

This makes sure we also include the version number in the description.

For `C++17`, this would, e.g., now return `"C++17"` instead of `"ISO C++"`.

Author: Michael137

lldb/unittests/Target/LanguageTest.cpp

@@ -40,8 +40,10 @@ TEST_F(LanguageTest, SourceLanguage_GetDescription) {
   EXPECT_EQ(SourceLanguage(eLanguageTypeC_plus_plus_20).GetDescription(),
             "C++20");
 
-  EXPECT_EQ(SourceLanguage(eLanguageTypeC).GetDescription(), "C (K&R and ISO)");
-  EXPECT_EQ(SourceLanguage(eLanguageTypeC89).GetDescription(), "C89");
+  EXPECT_EQ(SourceLanguage(eLanguageTypeC).GetDescription(),
+            "C (K&R and ISO)");
+  EXPECT_EQ(SourceLanguage(eLanguageTypeC89).GetDescription(),
+            "C89");
 
   EXPECT_EQ(SourceLanguage(eLanguageTypeObjC).GetDescription(), "Objective C");
   EXPECT_EQ(SourceLanguage(eLanguageTypeMipsAssembler).GetDescription(),