Fixed the functionality of START_GAME Event

Description

Added handler for StartGame at frontend and made some minor corrections. Also Triggered Sync_State Event after Start_Game and draw_card event as these events make changes using backend functions. These changes require to synced just after the event is triggered

Fixes : #169

Checklist

[ ] I have tested these changes locally.
[ ] I have reviewed the code and ensured it follows the project's coding guidelines.
[ ] I have updated the documentation, if necessary.
[ ] I have assigned reviewers to this pull request.

Screenshots (if applicable)

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shivansh-bhatnagar18 / multiplayer-uno

Fixed the functionality of START_GAME Event #172

Description

Fixes : #169

Checklist

Screenshots (if applicable)