Arm backend: Add options when using run.sh (#5627)

Summary:
This will enable you to build for different target, specify models from the command line and also control output folder used.

Pull Request resolved: https://github.com/pytorch/executorch/pull/5627

Reviewed By: digantdesai

Differential Revision: D63637343

Pulled By: mergennachin

fbshipit-source-id: cec5830b0a6a406cd72b7a2fecf3ff229fa2d359