v2.0.0

BREAKING — signal-first value: release with bump=major (2.0.0)

• value is now a model<string | null>() signal: bind with [(value)], or [value] + (valueChange).
• Implements the Signal Forms FormValueControl contract — [formField] drives the component natively.
• ControlValueAccessor removed (Angular forbids implementing it alongside FormValueControl): [formControl] / ngModel no longer bind. Migrate to [(value)] or [formField].
• New touch output (emitted when focus leaves) — enables Signal Forms' debounce('blur').
• disabled is now a bindable input (was only reachable through the CVA before).
• @angular/forms added to peerDependencies (it was already imported, but undeclared).