[WIP] [Form] Add min and max attributes to integer types

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #6732
| License       | MIT

We worked on issue #6732 and we added automatically `min` and `max` attributes to integer type based on Range validator.
It should work also for numeric type, but at the moment it is being rendered as "text" input type. Is there a specific reason beside the comment "type="number" doesn't work with floats"?

We are now working on implementing a guess{Max|Min}Value on Doctrine and Propel guesser.

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Credits: @dlondero