[llvm] [Object] Beginnings of SFrame parser and dumper (PR #147294)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-arm64-windows-msvc` running on `linaro-armv8-windows-msvc-04` while building `llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/161/builds/7134

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (test-build-unified-tree-check-all) failure: 1200 seconds without output running [b'ninja', b'check-all'], attempting to kill
...
UNSUPPORTED: mlgo-utils :: corpus/extract_ir_test.py (85000 of 85010)
UNSUPPORTED: mlgo-utils :: corpus/make_corpus_script.test (85001 of 85010)
UNSUPPORTED: mlgo-utils :: corpus/make_corpus_test.py (85002 of 85010)
UNSUPPORTED: mlgo-utils :: pytype.test (85003 of 85010)
PASS: lld :: MachO/x86-64-stubs.s (85004 of 85010)
PASS: lld :: MachO/zippered.yaml (85005 of 85010)
PASS: lld :: MinGW/lib.test (85006 of 85010)
PASS: lld :: MachO/weak-reference.s (85007 of 85010)
PASS: lld :: MachO/weak-definition-direct-fetch.s (85008 of 85010)
PASS: lld :: MinGW/driver.test (85009 of 85010)
command timed out: 1200 seconds without output running [b'ninja', b'check-all'], attempting to kill
program finished with exit code 1
elapsedTime=5297.823948

```

</details>

https://github.com/llvm/llvm-project/pull/147294