Add buck target for dw conv dep

[digantdesai]

Differential Revision: D89679523

[pytorch-bot]

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As of commit 543445f with merge base 0ee2f49 ():

UNSTABLE - The following job is marked as unstable, possibly due to flakiness on trunk:

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[Copilot]

Pull request overview

This PR adds a Buck build target for a Python module containing a depthwise convolution test class that is shared across multiple test files. The change enables proper dependency management for the DWConvsModule class which is imported by other test files.

• Creates a new TARGETS file defining a python_library target for the dw_convs_shared_weights module
• Adds the new target as a dependency in the test build configuration to make it available to all ARM backend tests

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
backends/arm/test/misc/TARGETS	New Buck target file defining the dw_convs_shared_weights_module python_library target with appropriate dependencies
backends/arm/test/targets.bzl	Adds the new module as a dependency for all ARM backend tests defined in the test suite

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