Retention of Manual Event Creation fields on changing tabs

Changes:
1. Added '@' as alias for src folder for having absolute path while importing
2. Added Mobility Event target and destination to state for retention
3. Disabled loading Mobility event as default
4. Added clearing all fields funtionality on clicking Close button
5. Disabled local state in Component and changed it to global state
6. Added value field to Tags where it was missing.

Testing:
Cypress & UT pass
Manual testing of Event Fields and changing the values