3037 support privacy declaration resource type for custom fields

[adamsachs]

❗ Contains migration; check downrev before merge

partially closes #3037

there will need to be some follow up changes on the fidesplus API side to make this fully work, but these are the necessary updates in fides

Code Changes

• update sqlalchemy and DB resource_type enum for CustomFieldDefinition and CustomField tables/models to allow privacy_declaration as a value
  • include a migration for this change. migration downgrade path has to remove any records (CustomFields and CustomFieldDefinitions) that have the privacy_declaration as their resource_type

Steps to Confirm

• The only real testing we can do on this PR specifically would be around the migrations.
  • I tested locally that migrating from a previous app state successfully added the privacy_declaration value to the resourcetypes enum
• Testing the actual application functionality will require some updates to the API, which lives in fidesplus

Pre-Merge Checklist

• All CI Pipelines Succeeded
• Documentation:
  • documentation complete, PR opened in fidesdocs
  • documentation issue created in fidesdocs
• Issue Requirements are Met
• Relevant Follow-Up Issues Created
• Update CHANGELOG.md
• For API changes, the Postman collection has been updated

[cypress]

Passing run #1562 ↗︎

0	3	0	0	0
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Details:

Merge 6f2e02b into 86f4bd8...
Project: fides	Commit: 9d08a30add ℹ️
Status: Passed	Duration: 00:36 💡
Started: Apr 25, 2023 3:19 PM	Ended: Apr 25, 2023 3:19 PM

_{This comment has been generated by cypress-bot as a result of this project's GitHub integration settings.}

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.04 ⚠️

Comparison is base (61cbd96) 87.51% compared to head (f51bd23) 87.48%.

❗ Current head f51bd23 differs from pull request most recent head 6f2e02b. Consider uploading reports for the commit 6f2e02b to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3149      +/-   ##
==========================================
- Coverage   87.51%   87.48%   -0.04%     
==========================================
  Files         309      309              
  Lines       17993    17925      -68     
  Branches     2337     2325      -12     
==========================================
- Hits        15746    15681      -65     
+ Misses       1821     1820       -1     
+ Partials      426      424       -2     

Impacted Files	Coverage Δ
src/fides/api/ctl/sql_models.py	98.26% <100.00%> (+<0.01%)	⬆️

... and 8 files with indirect coverage changes

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[adamsachs]

@SteveDMurphy since you've touched some custom fields work, thought you may be good to review this?
also @TheAndrewJackson you're working on FE, not sure how familiar you are with the custom fields BE, but you can take a look too!

a real small change in fides, some corresponding changes in fidesplus coming shortly thereafter

[SteveDMurphy]

These ones are tough to test for sure! Also feels like there have been 1-2 migration changes per day making it hard to keep them aligned and not blocking each other in flight 🥴 looks good for me locally and runs as well

[pattisdr]

looks good @adamsachs