once-common-structs and once-connection-type

[hasezoey]

This PR adds options once-common-structs and once-connection-type

These options are currently NOT the default

to make them default, should they still be a option or should it be unconfigurable? also i dont think no-once-connection-type or no-once-common-structs sounds good, any suggestions?

re #56

[Wulf]

Awesome -- yeah, this should definitely be the default and it's a great refactor of the generated output. We can make it the default in another PR

Let's do this for the tests:
Add a second table to the schema and also remove all fields from the tables except maybe an ID, similar to my comment for #82

[hasezoey]

added a second table and rebased onto main

[Wulf]

It would be nice to add another test for these options + the single-model-file option but if we're thinking of making these the default, it should be okay to ship this!

Again, thanks for this great refactor of the generated code

[hasezoey]

It would be nice to add another test for these options + the single-model-file option

added with 007ace8 (all options together), i didnt have a better name for the folder though

[Wulf]

awesome, thank you @hasezoey