Add more supported C++ file types

Author: rockbruno

Sources/SourceKitBazelBSP/RequestHandlers/BuildTargets/SupportedExtension.swift

@@ -26,30 +26,36 @@ private let logger = makeFileLevelBSPLogger()
 // Contains data about all the file types the BSP knows how to parse.
 // See also: DependencyRuleType.swift, TopLevelRuleType.swift
 enum SupportedExtension: String, CaseIterable {
+    case cCaps = "C"
     case c
     case cc
     case cpp
     case cxx
+    case inc
+    case ipp
+    case hCaps = "H"
     case h
+    case hh
     case hpp
     case m
     case mm
     case swift
 
     var kind: SourceKitSourceItemKind {
         switch self {
-        case .h, .hpp: return .header
-        case .c, .cc, .cpp, .cxx: return .source
+        case .hCaps, .h, .hh, .hpp, .inc, .ipp: return .header
+        case .cCaps, .c, .cc, .cpp, .cxx: return .source
         case .m, .mm: return .source
         case .swift: return .source
         }
     }
 
-    // Source: https://github.com/swiftlang/sourcekit-lsp/blob/7495f5532fdb17184d69518f46a207e596b26c64/Sources/LanguageServerProtocolExtensions/Language%2BInference.swift#L33
+    // Source for .h == Obj-C++: https://github.com/swiftlang/sourcekit-lsp/blob/7495f5532fdb17184d69518f46a207e596b26c64/Sources/LanguageServerProtocolExtensions/Language%2BInference.swift#L33
+    // Technically not 100% correct, but does the job for what it needs to do.
     var language: Language {
         switch self {
         case .c: return .c
-        case .cpp, .cc, .cxx, .hpp: return .cpp
+        case .cCaps, .cpp, .cc, .cxx, .hCaps, .hh, .hpp, .inc, .ipp: return .cpp
         case .m: return .objective_c
         case .mm, .h: return .objective_cpp
         case .swift: return .swift