Arm backend: Add numerically stable (log)softmax decomposition

- Only use the old version for Ethos-U55 compile specs since amax isn't supported in that case.
- Add support for negative indices in amax/amin
- Refactor unittests

Change-Id: I7ed43b8d6b95625f59ce9e71d55a21763fc51358
Signed-off-by: Adrian Lundell <adrian.lundell@arm.com>
Co-authored-by: Oscar Andersson  <oscar.andersson@arm.com>

Arm backend: Add TOSA support for logical not

Change-Id: I5bc8e68561e1403a2de388a3a0fd1f4435401ea9
Signed-off-by: Måns Nilsson <mans.nilsson@arm.com>

dont explicitly target flatc when building a wheel

Refactor Ops Tests: AvgPool, Clamp, Clone, Conv1d, Sub

Refactored multiple operator test files:
- Replaced `@parameterized.expand` with `@common.parametrize`.
- Removed `_test_*_pipeline()` functions and replaced them with `TosaPipelineMI` and `TosaPipelineBI`.
- Fixed padding handling for max pooling and avg pooling.
- Updated pipeline infrastructure to simplify replacing the default quantize stage.

Signed-off-by: Fang-Ching <Fang-Ching.Chen@arm.com>
Change-Id: I5dd342584ef079b33463239e8e56726ce55bdc30

Arm backend: Make build script source the generated setup_path.sh

This makes it more easy to run the scripts from various tools like
your editor.

Signed-off-by: Zingo Andersen <zingo.andersen@arm.com>
Change-Id: I9be8781587f8b75b1f11d24ad4aa9dc1c185b310

Merge branch 'main' into Arm-backend-Bump-FVP-timeout-to-10-min

Merge branch 'main' into Arm-backend-Remove-unused-github-ci-git-setup

Add missing __init__.py to passes

backends/arm/_passes missed an init file which caused pyre to not find
imports from _passes.

Signed-off-by: Oscar Andersson <oscar.andersson@arm.com>
Change-Id: I80e0c2071844ec0fefeb9fd44f9471ed1be32228

Merge branch 'main' into revert-8997-change-985586

Fix formatting