Feat/dynamic matrix ci

[endersonmaia]

This PR will make the CI build to build the templates on the following conditions:

• on pull_request: only builds the templates that thas changes in that PR;
• on push to main: will build all templates;

[tuler]

This looks very complex.
Either move code to an gh action, or use an existing actions.
I found this one. Take a look if it works.

[endersonmaia]

This looks very complex.

It works.

Either move code to an gh action

I think it's even more complex.

, or use an existing actions. I found this one. Take a look if it works.

Tried and it's failing.

I'll go back to this later.