Add availability flags in NLPModelMeta and NLSMeta #551

Job	Run time
Julia lts - windows-latest - x64 - pull_request	1m 40s
Julia 1 - ubuntu-latest - x64 - pull_request	1m 10s
Julia lts - ubuntu-latest - x64 - pull_request	1m 5s
Julia lts - macos-latest - x64 - pull_request	2m 19s
Julia 1 - macos-latest - arm64 - pull_request	50s
Julia 1 - ubuntu-24.04-arm - arm64 - pull_request	1m 5s
Julia pre - ubuntu-latest - x64 - pull_request	1m 7s
Julia 1 - macos-latest - x64 - pull_request	1m 56s
Julia 1 - windows-latest - x64 - pull_request	1m 47s
Julia pre - macos-latest - x64 - pull_request	2m 9s
Julia pre - windows-latest - x64 - pull_request	1m 41s
	16m 49s

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