Issue: Replace var with let and const in loadGoogleMapsLibrary function

[ankitkumar748846]

Description:

The loadGoogleMapsLibrary function currently uses var for variable declarations, which can lead to scoping issues and unintended behavior. Modern JavaScript best practices recommend using let and const instead for better readability and maintainability.

Steps to Reproduce

• Check the loadGoogleMapsLibrary function implementation.
• Notice that var is used for variable declarations instead of let or const.

Why to Use ?

This change improves code maintainability and follows modern JavaScript practices. It does not alter the functionality of the script but makes it more reliable and easier to read.

[ankitkumar748846]

@aaronbrethorst Would love to hear your thoughts! Let me know if you'd like me to submit a PR. 😊