[clang-offload-bundler] Support `.cui` and `.d`.

[hliao]

Adding this support is aimed to prevent crashing or failure, it's not intended to be final output for -M or -E. So, hip fails on these options due to the unsupported type of clang-offload-bundler. Before we nail down the details on the expected output of -M or -E, especially -M, we at least should not fail them.

[tra]

Maybe, add a TODO to eventually remove .d .
.cui should probably remain as it's yet another variant of preprocessed output that we allow bundling for C/C++.

clang/tools/clang-offload-bundler/ClangOffloadBundler.cpp

TargetNames("targets", cl::CommaSeparated, cl::OneOrMore,
                 cl::desc("[<offload kind>-<target triple>,...]"),
                 cl::cat(ClangOffloadBundlerCategory));
 static cl::opt<std::string>
     FilesType("type", cl::Required,
               cl::desc("Type of the files to be bundled/unbundled.\n"
                        "Current supported types are:\n"
                        "  i   - cpp-output\n"
                        "  ii  - c++-cpp-output\n"
+                       "  cui - cuda/hip-output\n"
+                       "  d   - dependency\n"
                        "  ll  - llvm\n"
                        "  bc  - llvm-bc\n"
                        "  s   - assembler\n"
                        "  o   - object\n"
                        "  gch - precompiled-header\n"
                        "  ast - clang AST file"),
               cl::cat(ClangOffloadBundlerCategory));
 static cl::opt<bool>

 }
 
 /// Return an appropriate handler given the input files and options.
 static FileHandler *CreateFileHandler(MemoryBuffer &FirstInput) {
   if (FilesType == "i")
     return new TextFileHandler(/*Comment=*/"//");
   if (FilesType == "ii")
     return new TextFileHandler(/*Comment=*/"//");
+  if (FilesType == "cui")
+    return new TextFileHandler(/*Comment=*/"//");
+  // TODO: `.d` should be eventually removed once `-M` and its variants are
+  // handled properly in offload compilation.
+  if (FilesType == "d")
+    return new TextFileHandler(/*Comment=*/"#");
   if (FilesType == "ll")
     return new TextFileHandler(/*Comment=*/";");
   if (FilesType == "bc")
     return new BinaryFileHandler();
   if (FilesType == "s")
     return new TextFileHandler(/*Comment=*/"#");
   if (FilesType == "o")
     return CreateObjectFileHandler(FirstInput);