Refactor SelectableChip to be a top level Chip component

[MozillaNoah]

The SelectableChip Composable is effectively a Chip that just handles re-colors based on the isSelected boolean. The component would be best served as a generic Chip component (similar to TextButton) that has a condensed list of parameters and uplifts any stateful logic (such as selected vs unselected) to the actual UI that uses it.

The contract should be something like:

fun Chip(
    text: String,
    modifier: Modifier = Modifier,
    textColor: Color? = null,
    backgroundColor: Color? = null,
    onClick: (() -> Unit)? = null,
) {

The other Chip component use cases (such as having an optional icon) could be implemented as well.

The text & default colors should be double checked against their specs in FIgma.

┆Issue is synchronized with this Jira Task

[gabrielluong]

Okay yea, the contract totally makes sense to me. Thanks for the thorough issue description.