types for targets/layers/groups, term.jl integration, error handling

[gottacatchenall]

A lot of things that are in service of moving toward v0.2 and eventually an v1.0 (#27)

• Better integration with SimpleSDMLayers, (and staged to be ready to integrate with SDMToolkit)
• Types for layers, groups, and targets, weights
• Integration with Term.jl
• Error handling with BONs.jl specific errors designed to improve user interpretation of error messages

[codecov[bot]]

Codecov Report

Base: 95.69% // Head: 71.17% // Decreases project coverage by -24.52% :warning:

Coverage data is based on head (e39e3b0) compared to base (1a83484). Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #37 +/- ## =========================================== - Coverage 95.69% 71.17% -24.52% =========================================== Files 12 16 +4 Lines 209 281 +72 =========================================== Hits 200 200 - Misses 9 81 +72 ``` | [Impacted Files](https://codecov.io/gh/EcoJulia/BiodiversityObservationNetworks.jl/pull/37?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=EcoJulia) | Coverage Δ | | |---|---|---| | [src/BiodiversityObservationNetworks.jl](https://codecov.io/gh/EcoJulia/BiodiversityObservationNetworks.jl/pull/37?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=EcoJulia#diff-c3JjL0Jpb2RpdmVyc2l0eU9ic2VydmF0aW9uTmV0d29ya3Muamw=) | `100.00% <ø> (ø)` | | | [src/types/groups.jl](https://codecov.io/gh/EcoJulia/BiodiversityObservationNetworks.jl/pull/37?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=EcoJulia#diff-c3JjL3R5cGVzL2dyb3Vwcy5qbA==) | `0.00% <0.00%> (ø)` | | | [src/types/layers.jl](https://codecov.io/gh/EcoJulia/BiodiversityObservationNetworks.jl/pull/37?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=EcoJulia#diff-c3JjL3R5cGVzL2xheWVycy5qbA==) | `0.00% <0.00%> (ø)` | | | [src/types/targets.jl](https://codecov.io/gh/EcoJulia/BiodiversityObservationNetworks.jl/pull/37?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=EcoJulia#diff-c3JjL3R5cGVzL3RhcmdldHMuamw=) | `0.00% <0.00%> (ø)` | | | [src/types/weights.jl](https://codecov.io/gh/EcoJulia/BiodiversityObservationNetworks.jl/pull/37?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=EcoJulia#diff-c3JjL3R5cGVzL3dlaWdodHMuamw=) | `0.00% <0.00%> (ø)` | | | [src/utils.jl](https://codecov.io/gh/EcoJulia/BiodiversityObservationNetworks.jl/pull/37?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=EcoJulia#diff-c3JjL3V0aWxzLmps) | `56.66% <0.00%> (-43.34%)` | :arrow_down: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=EcoJulia). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=EcoJulia)

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[gottacatchenall]

this ended up being a prototype for some stuff in #65 , and some stuff that is no longer relevant post SDMLayers v1, etc