Remove Lodash as a Dependency

[mohit-kumar-bechtel]

Lodash is currently listed as a dependency in the openapi-to-postmanv2 module. While Lodash provides useful utility functions, it increases the overall package size. Modern JavaScript (ES6+) includes many built-in functions that can replace Lodash's utilities, reducing the need for an external dependency. By removing Lodash, we can streamline the module and improve performance.

Benefits:

• Reduced package size.
• Fewer external dependencies.
• Leveraging built-in JavaScript features for improved efficiency.

[wellitsmk]

a great resource to help with this change - https://github.com/you-dont-need/You-Dont-Need-Lodash-Underscore