Add Support for Custom Primary Key in Templates

[nabdelgadir]

Cross-posting from #3297 (comment):

AFAICT, lb4 model does allow users to create a primary key property with a different name than id.

Example prompts & answers to use pk instead of id:

Model Product will be created in src/models/product.model.ts

Let's add a property to Product
Enter an empty property name when done

? Enter the property name: pk
? Property type: string
? Is pk the ID property? Yes
? Is it required?: No
? Default value [leave blank for none]:

Now that #3297 is landed, the id property is excluded when making a POST request. However, the Controller and HasMany templates assume it's always called id.

Acceptance criteria

• Modify Controller and HasMany templates to include support for custom primary keys