Add conversion pass for Arith ConstantOp #1106

Job	Run time
build-and-test / build-image	9s
spdx / check-spdx-headers	5s
macos-build / build (macos-latest, clang, clang++, Release, OFF)	1m 45s
pre-commit / pre-commit	33s
build-and-test / Build tt-mlir (ubuntu-latest, OFF, run)	34m 58s
build-and-test / Build tt-mlir (ubuntu-latest, ON, perf)	40m 36s
build-and-test / run-ttrt-tests (n150, ON, perf)	10m 19s
build-and-test / run-tests (n150, OFF, run, --non-zero)	2m 3s
build-and-test / run-tests (n150, ON, perf)	3m 59s
build-and-test / run-tests (n300, OFF, run, --non-zero)	2m 5s
build-and-test / run-tests (n300, ON, perf)	4m 43s
	1h 41m 15s

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