fix: ion input button

[allan-chagas-brisa]

Issue Number

fix #872

Description

Change of the button elements inside the ion input for a single ion button, that can adapt to a icon button or a regular button.

Proposed Changes

• The two buttons elements were removed ;
• one ionInputProperty removed, leaving just the inputButton;
• added the inputButtonConfig property;
• the ng classes were removed from the input and one was set to the input container;
• added a ionButton with its main properties;
• changed the styles to adapt the ion button to this scenario;
• addapted the tests to the new input button specification;
• changes on the date-picker to adapt to the new inputButton;

How to Test

yarn test input

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Compliance

• I have verified that this change complies with our code and contribution policies.
• I have verified that this change does not cause regressions and does not affect other parts of the code.