Simplify CapInternalInstallAdd and introduce AddCapOperation

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 79.80296% with 41 lines in your changes missing coverage. Please review.

Project coverage is 82.00%. Comparing base (cf4d2b9) to head (92ca267). Report is 10 commits behind head on master.

Files with missing lines	Patch %	Lines
CAP/gap/InstallAdds.gi	77.83%	41 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1668 +/- ## ========================================== - Coverage 82.00% 82.00% -0.01% ========================================== Files 538 538 Lines 70036 70025 -11 ========================================== - Hits 57433 57423 -10 + Misses 12603 12602 -1 ``` | [Flag](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | Coverage Δ | | |---|---|---| | [ActionsForCAP](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `64.09% <ø> (ø)` | | | [AttributeCategoryForCAP](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `90.45% <ø> (ø)` | | | [CAP](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `85.05% <79.80%> (-0.01%)` | :arrow_down: | | [CartesianCategories](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `91.77% <ø> (ø)` | | | [CompilerForCAP](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `95.87% <ø> (ø)` | | | [ComplexesAndFilteredObjectsForCAP](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `73.60% <ø> (ø)` | | | [FreydCategoriesForCAP](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `81.49% <ø> (ø)` | | | [GeneralizedMorphismsForCAP](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `61.60% <ø> (ø)` | | | [GradedModulePresentationsForCAP](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `44.62% <ø> (ø)` | | | [GroupRepresentationsForCAP](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `71.92% <ø> (ø)` | | | [HomologicalAlgebraForCAP](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `73.21% <ø> (ø)` | | | [InternalExteriorAlgebraForCAP](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `93.09% <ø> (ø)` | | | [LinearAlgebraForCAP](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `66.54% <ø> (ø)` | | | [ModulePresentationsForCAP](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `70.10% <ø> (ø)` | | | [ModulesOverLocalRingsForCAP](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `90.70% <ø> (ø)` | | | [MonoidalCategories](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `89.49% <ø> (ø)` | | | [ToricSheaves](https://app.codecov.io/gh/homalg-project/CAP_project/pull/1668/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project) | `21.79% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=homalg-project#carryforward-flags-in-the-pull-request-comment) to find out more.

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