[llvm] [SandboxIR] Add bazel support (PR #107486)

[Arthur Eubanks via llvm-commits]

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@@ -1490,6 +1504,22 @@ cc_library(
     ],
 )
 
+cc_library(
+    name = "SandboxVectorizer",
+    srcs = glob([
+        "lib/Transforms/Vectorize/SandboxVectorizer/*.cpp",
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aeubanks wrote:

for consistency with the CMake build, this should be part of `Vectorize` above

https://github.com/llvm/llvm-project/pull/107486