doc: add the first draft of oq-lite on Mac
doc: add the first draft of oq-lite on Mac

Former-commit-id: 52185c62ec087b60505afc96d88a5499b7403cdc [formerly 52185c62ec087b60505afc96d88a5499b7403cdc [formerly 46cfca941b29e15ed9528c816abd73c3e701167a]]
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gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine