Initial package registry

• Initial registration of Strategies to Integrate Data and Biogeochemical Models, the SINDBAD Model Data Integration framework, version v0.1.0, from the SINDBAD monorepo.
• High-level framework wrapping core SINDBAD Terrestrial Ecosystem Model SindbadTEM for end-to-end experiment workflows (setup, simulation, optimization, ML utilities).
• Uses ErrorMetrics.jl for metrics, TimeSamplers.jl for temporal aggregation, and OmniTools.jl for shared utilities.