Add Live Life Display on Game Header

[rupashreesmagic]

The objective of this issue is to add a "LIVE LIFE" label to the game header section and ensure the current number of lives is dynamically displayed next to it. The live life count should be easily visible to users during gameplay, positioned on the left side of the top of the screen. Specifically:

1. Modify the existing index.html to include a "LIVE LIFE" label.
2. Ensure the current number of lives is displayed next to the "LIVE LIFE" label.
3. Update any associated CSS in Alien.css to ensure proper positioning and styling, making it visible and aesthetically consistent with the rest of the game's UI.

[rupashreesmagic]

@YadavAkhileshh ,There should be live life will be present ,i would like to add this features please assign that issues to me.