Angular suite: rename child entitiy files #17709
Description
This PR renames to child entity files for the to differentiate with master files in suite > templates pages
Resolves #17555
Checklist
- I fully tested it as developer / designer and created unit / integration tests
- I've assigned reviewer, related labels and set a milestone for this PR
How to test it?
- Create project with suite
- Create master and child entities
- Test the behaviors for childs
Excepted
Child section must works correctly as before