Add enzyme rrule for modified geom

[codecov[bot]]

Codecov Report

Patch coverage: 76.59% and project coverage change: +64.15 :tada:

Comparison is base (e7a08b5) 21.43% compared to head (b1d580c) 85.58%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #289 +/- ## =========================================== + Coverage 21.43% 85.58% +64.15% =========================================== Files 36 36 Lines 3257 3350 +93 =========================================== + Hits 698 2867 +2169 + Misses 2559 483 -2076 ``` | [Impacted Files](https://codecov.io/gh/ptiede/Comrade.jl/pull/289?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Tiede) | Coverage Δ | | |---|---|---| | [src/Comrade.jl](https://codecov.io/gh/ptiede/Comrade.jl/pull/289?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Tiede#diff-c3JjL0NvbXJhZGUuamw=) | `100.00% <ø> (+20.00%)` | :arrow_up: | | [src/models/threaded.jl](https://codecov.io/gh/ptiede/Comrade.jl/pull/289?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Tiede#diff-c3JjL21vZGVscy90aHJlYWRlZC5qbA==) | `83.72% <ø> (+83.72%)` | :arrow_up: | | [src/models/misc.jl](https://codecov.io/gh/ptiede/Comrade.jl/pull/289?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Tiede#diff-c3JjL21vZGVscy9taXNjLmps) | `71.42% <33.33%> (+71.42%)` | :arrow_up: | | [src/calibration/jones.jl](https://codecov.io/gh/ptiede/Comrade.jl/pull/289?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Tiede#diff-c3JjL2NhbGlicmF0aW9uL2pvbmVzLmps) | `79.87% <42.85%> (+79.87%)` | :arrow_up: | | [src/models/modelimage/fft\_alg.jl](https://codecov.io/gh/ptiede/Comrade.jl/pull/289?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Tiede#diff-c3JjL21vZGVscy9tb2RlbGltYWdlL2ZmdF9hbGcuamw=) | `79.48% <50.00%> (+79.48%)` | :arrow_up: | | [src/models/modelimage/nuft.jl](https://codecov.io/gh/ptiede/Comrade.jl/pull/289?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Tiede#diff-c3JjL21vZGVscy9tb2RlbGltYWdlL251ZnQuamw=) | `75.00% <75.00%> (+75.00%)` | :arrow_up: | | [src/models/modifiers.jl](https://codecov.io/gh/ptiede/Comrade.jl/pull/289?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Tiede#diff-c3JjL21vZGVscy9tb2RpZmllcnMuamw=) | `85.06% <79.48%> (+45.72%)` | :arrow_up: | | [src/models/methods.jl](https://codecov.io/gh/ptiede/Comrade.jl/pull/289?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Tiede#diff-c3JjL21vZGVscy9tZXRob2RzLmps) | `52.47% <83.33%> (+48.01%)` | :arrow_up: | | [src/models/combinators.jl](https://codecov.io/gh/ptiede/Comrade.jl/pull/289?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Tiede#diff-c3JjL21vZGVscy9jb21iaW5hdG9ycy5qbA==) | `84.53% <85.18%> (+77.86%)` | :arrow_up: | | [src/calibration/gains.jl](https://codecov.io/gh/ptiede/Comrade.jl/pull/289?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Tiede#diff-c3JjL2NhbGlicmF0aW9uL2dhaW5zLmps) | `75.00% <100.00%> (+75.00%)` | :arrow_up: | | ... and [32 more](https://codecov.io/gh/ptiede/Comrade.jl/pull/289?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Paul+Tiede) | | 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=Paul+Tiede). 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=Paul+Tiede)

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