Feat: Change take off point and task description page mobile responsive

[suzit-10]

Description

This PR enables the user to change the flight take-off point following the given process:

1. click on Change starting point available at the right corner of the map
2. the user has to choose whether the take-off point will be the user's current location or choose on map.
3. if the user selects the current location icon will be plotted on the current location if the user selects place on map he will be able to click on the desired location and icon will be plotted on the clicked location.
4. To save the starting point user has to click save starting point button

Note: The new starting point should be inside the 200m area.

Screenshot of task description page on desktop view:

Screenshot of task description page on mobile view: