Global option for defaulting button type

[andrewseguin]

Please describe the feature you would like to request.

Should be an injectable option config to default button to a particular type, e.g. "button"

What is the use-case or motivation for this proposal?

Buttons currently default to type "submit" if not specified. It is very common to want type button by default.

Is there anything else we should know?

We use an injectable option config in autocomplete, which is the pattern we want to use for this feature:
https://github.com/angular/components/blob/master/src/material/autocomplete/autocomplete.ts#L61

[ramarivera]

Is someone working on this? If not, could I take it? Thanks!

[rafaelss95]

@jonathanRinciari do you pretend to send a PR with your changes?