Fixes #7023 - API Org Visibility

[richmahn]

Fixes #7023

Makes sure we are handling visibility when creating and editing orgs as strings. Can be "public", "limited" or "private". Isn't required so if visibility isn't set (empty string) when creating it will be public and when editing it will remain the same.

Update: Did a little clean up of swagger comments and properties for repo Create and Update file endpoints as well since didn't know that comments could be put in the struct and seen by clicking "Model" on the swagger page until recently.

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@d95caf5). Click here to learn what that means.
The diff coverage is 88.88%.

@@            Coverage Diff            @@
##             master    #7028   +/-   ##
=========================================
  Coverage          ?   41.73%           
=========================================
  Files             ?      443           
  Lines             ?    60159           
  Branches          ?        0           
=========================================
  Hits              ?    25105           
  Misses            ?    31777           
  Partials          ?     3277

Impacted Files	Coverage Δ
routers/api/v1/admin/org.go	53.16% <100%> (ø)
routers/api/v1/convert/convert.go	81.42% <100%> (ø)
routers/api/v1/repo/file.go	68.19% <100%> (ø)
routers/api/v1/org/org.go	70.73% <81.81%> (ø)
modules/structs/org_type.go	94.11% <83.33%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d95caf5...7098cd5. Read the comment docs.

[zeripath]

Last two nits from me. The description field should describe the body in total but in any case I think it has to be in the referenced schema when there is a reference like that. (I could be wrong - if you want to keep a description just check what other bits do.)