[4/N] Add backend options map

[cccclai]

Stack from ghstack (oldest at bottom):

• [7/N] Add sugar syntax for module.update #11534
• [6/N] Add update in module #11533
• [5/N] Add update in method #11463
• -> [4/N] Add backend options map #11462
• [3/N] Add update function in backend interface #11391
• [2/N] Add update context #11390
• [1/N] Add BackendOptions class #11389

This is to manage the backend <-> BackendOptions map. Users will create the bakcend options map, and ET runtime will read the backend name, and dispatch the list of backend options to each backend.

Differential Revision: D76149466

[pytorch-bot]

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❌ 2 New Failures, 4 Unrelated Failures

As of commit cab5519 with merge base f7cc72f ():

NEW FAILURES - The following jobs have failed:

• Lint / lintrunner / linux-job (gh)
  >>> Lint for runtime/backend/test/backend_interface_update_test.cpp:
• pull / android / run-emulator (gh)
  The process '/usr/bin/sh' failed with exit code 255

FLAKY - The following jobs failed but were likely due to flakiness present on trunk:

• pull / test-models-linux (resnet50, xnnpack-quantization-delegation, linux.2xlarge) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)
• pull / test-quantized-aot-lib-linux / linux-job (gh) (detected as infra flaky with no log or failing log classifier)

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / unittest / linux / linux-job (gh) (trunk failure)
  .ci/scripts/tests/test_gather_benchmark_configs.py::TestGatehrBenchmarkConfigs::test_generate_compatible_configs_quantized_llama_model
• pull / unittest-editable / linux / linux-job (gh) (trunk failure)
  .ci/scripts/tests/test_gather_benchmark_configs.py::TestGatehrBenchmarkConfigs::test_generate_compatible_configs_quantized_llama_model

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This pull request was exported from Phabricator. Differential Revision: D76149466

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This pull request was exported from Phabricator. Differential Revision: D76149466

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This pull request was exported from Phabricator. Differential Revision: D76149466