[Bazel] Add more llvm tools

[HighW4y2H3ll]

Adding llvm-ir2vec, llvm-ctxprof-util (and llvm-sim) in the Bazel configs. llvm-ctxprof-util and llvm-ir2vec are used in several LIT unit tests, and the missing binary is causing unit test failures.

llvm-ctxprof-util:

llvm-project/llvm/test/Analysis/CtxProfAnalysis/flatten-icp.ll

Line 2 in 15cde99

; RUN: llvm-ctxprof-util fromYAML --input %t/profile.yaml --output %t/profile.ctxprofdata

llvm-ir2vec:

llvm-project/llvm/utils/mlgo-utils/IR2Vec/generateTriplets.py

Line 60 in 55d4e92

self.ir2vec_binary = os.path.join(llvm_build_dir, "bin", "llvm-ir2vec")