[UX] Make `dstack project` and `dstack project set-default` interactive for default project selection #6218

Job	Run time
compute-version	3s
build-docs / build-docs	1m 14s
build-artifacts / code-lint	41s
build-artifacts / frontend-build	7s
build-artifacts / gateway-build	13s
build-artifacts / runner-test (macos-latest)	57s
build-artifacts / runner-test (ubuntu-latest)	58s
build-artifacts / generate-json-schema	22s
build-artifacts / python-build	19s
build-artifacts / python-test (ubuntu-latest, 3.10)	2m 26s
build-artifacts / python-test (macos-latest, 3.12)	2m 35s
build-artifacts / python-test (windows-latest, 3.10)	2m 10s
build-artifacts / python-test (macos-latest, 3.13)	2m 28s
build-artifacts / python-test (macos-latest, 3.11)	2m 29s
build-artifacts / python-test (windows-latest, 3.11)	2m 9s
build-artifacts / python-test (ubuntu-latest, 3.9)	2m 25s
build-artifacts / python-test (windows-latest, 3.12)	2m 8s
build-artifacts / python-test (macos-latest, 3.9)	2m 27s
build-artifacts / python-test (ubuntu-latest, 3.13)	2m 25s
build-artifacts / python-test (macos-latest, 3.10)	2m 30s
build-artifacts / python-test (windows-latest, 3.13)	2m 20s
build-artifacts / python-test (ubuntu-latest, 3.11)	2m 25s
build-artifacts / python-test (ubuntu-latest, 3.12)	2m 25s
build-artifacts / python-test (windows-latest, 3.9)	2m 24s
build-artifacts / runner-compile (ubuntu-24.04-arm, linux, arm64)	33s
build-artifacts / runner-compile (ubuntu-24.04, linux, amd64)	40s
upload-post-pypi-artifacts	0s
upload-pre-pypi-artifacts	-1s
	41m 52s

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