Add typings for component props

[levithomason]

Feature Request

Problem description

We are missing or have removed props typings in our components.

Proposed solution

See #33 fo the discussion and agreement on this proposal. Let's do this one component and PR at a time to give room for addressing issues that will arise.

1. Add props typings only for handledProps as this is most helpful to the user.
2. Make all props interfaces extensible so users can pass any prop value they wish (also aligns with our practice of spreading rest props).
3. Provide a *Strict named interface which is not extensible. This allows users to lock allowed props to strictly those supported by the component if they wish, see export element props without [key: string]: any; Semantic-Org/Semantic-UI-React#2836. Our props interfaces will union this interface making it extensible.

TODO

• Accordion feat(Accordion): add props interface #33
• Avatar feat(Avatar): add props interface #129
• Button feat(Props Interfaces): add props interface to Button, AccordionTitle, AccordionContent and refactoring the types definitions #130
• Chat feat(Chat): add props interface #131
• Divider feat(Divider): add props interface #132
• Grid feat(Grid): add props interface  #133
• Header feat(Header): add props interface #139
• Icon feat(Icon): add props interface #137
• Image feat(Image): add props interface #147
• Input feat(Input): add props interface  #140
• ItemLayout feat(ItemLayout): add props interface and improve props typings #142
• Label feat(Label): add props interface #148
• Layout feat(Layout): add props interface  #143
• List feat(List): add props interface #153
• Menu feat(Menu): add prop interfaces #155
• Provider
• Text feat(Text): add prop interfaces #154
• Radio feat(Radio): add props interface #174
• Segment feat(Segment): add props interface #175

[levithomason]

/cc @kuzhelov @mnajdova @Bugaa92

[levithomason]

It is worth nothing that we have a few global props such as variables, styles, and as. This actually excludes some edge case components like Portal and Provider. However, we should consider how we advertise these prop in docs and enforce them in tests.