[clang] [llvm] [clang][python][test] Move python binding tests to lit framework (PR #142948)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-aarch64-sve-vls` running on `linaro-g3-02` while building `clang` at step 7 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/143/builds/8751

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

```
Step 7 (ninja check 1) failure: stage 1 checked (failure)
...
PASS: Clang Tools :: clang-tidy/checkers/bugprone/suspicious-semicolon-fail.cpp (23148 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/signal-handler.c (23149 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/signed-char-misuse.cpp (23150 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/posix-return.cpp (23151 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/sizeof-expression-warn-on-sizeof-pointer-to-aggregate.cpp (23152 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/no-escape.m (23153 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/narrowing-conversions-ignoreconversionfromtypes-option.cpp (23154 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/parent-virtual-call.cpp (23155 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/undelegated-constructor-cxx98.cpp (23156 of 98808)
XPASS: Clang :: bindings/python/bindings.sh (23157 of 98808)
******************** TEST 'Clang :: bindings/python/bindings.sh' FAILED ********************
Exit Code: 0

Command Output (stderr):
--
env PYTHONPATH=/home/tcwg-buildbot/worker/clang-aarch64-sve-vls/llvm/clang/test/bindings/python/../../../bindings/python    CLANG_LIBRARY_PATH=`llvm-config --libdir`    "/usr/bin/python3.10" -m unittest discover -s /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/llvm/clang/test/bindings/python/tests # RUN: at line 33
++ llvm-config --libdir
+ env PYTHONPATH=/home/tcwg-buildbot/worker/clang-aarch64-sve-vls/llvm/clang/test/bindings/python/../../../bindings/python CLANG_LIBRARY_PATH=/home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/lib /usr/bin/python3.10 -m unittest discover -s /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/llvm/clang/test/bindings/python/tests
.....................................................................................................................................................................
----------------------------------------------------------------------
Ran 165 tests in 0.993s

OK

--

********************
PASS: Clang :: utils/update_cc_test_checks/check-globals.test (23158 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/sizeof-expression-any-pointer.cpp (23159 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/spuriously-wake-up-functions.c (23160 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/sizeof-expression-pointer-arithmetics.c (23161 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/spuriously-wake-up-functions.cpp (23162 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/implicit-widening-of-multiplication-result-int.cpp (23163 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/implicit-widening-of-multiplication-result-pointer-offset.cpp (23164 of 98808)
PASS: Clang :: utils/update_cc_test_checks/mangled_names.test (23165 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/reserved-identifier.cpp (23166 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/shared-ptr-array-mismatch.cpp (23167 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/string-literal-with-embedded-nul.cpp (23168 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/suspicious-memory-comparison-32bits.cpp (23169 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/unused-raii-crash.mm (23170 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/stringview-nullptr.cpp (23171 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/unhandled-exception-at-new.cpp (23172 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/suspicious-semicolon-constexpr.cpp (23173 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/suspicious-include.cpp (23174 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/suspicious-missing-comma.cpp (23175 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/suspicious-stringview-data-usage.cpp (23176 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/suspicious-memset-usage.c (23177 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/suspicious-memory-comparison.cpp (23178 of 98808)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/suspicious-memory-comparison.c (23179 of 98808)

```

</details>

https://github.com/llvm/llvm-project/pull/142948