[FEATURE] Input Search component

Implement a BitSearchField component which exposes the feature of searching data. The component should implement the functionalities described in the Bootstrap Italia official documentation [here](https://italia.github.io/bootstrap-italia/docs/form/input/#ricerca-con-autocompletamento)

### Requirements:
- Implement a BitSearchField component, which must be a input type="search".
- The component should allow to search inside a set of data
- The set of data can be a in-memory collection or loaded via a remote call.
- Implement all the relative unit tests both for markup and behaviors
- Implement the stories for the component
- Add the relative documentation

### Acceptance Criteria:
Put here all the steps that need to be done in order to consider this feature completed.
- All unit tests must succeed
- The component must have all the relative stories in the BitBlazor.Stories project
- The component must have a comprehensive documentation in markdown format

### References
- https://italia.github.io/bootstrap-italia/docs/form/input/#ricerca-con-autocompletamento