Feature: Enhancements for Beacon Loading and Adding Radius Field for Fetching Beacons

`Features:`

1. We can add a rolling Down Loading Indicator, when the user triggers a reload of beacons,then a rolling down loading indicator
should be displayed and the application should fetch the latest beacon data
2. adding Radius Field for Fetching Beacons. when the user specifies a radius for beacon retrieval then the application should fetch
beacons within the specified radius and display the relevant beacon information.

@Akshatji800, I'm interested in working on the these features. Your thoughts?