feat: make BrunoResponse callable to access body data using expressions fixes (#481)

[Pragadesh-45]

fixes: #481

Description

This PR introduces the ability to use the res object as a callable function to access body data directly. For example:

const page = res('page');

This functionality simplifies post-response scripting. Currently, developers has a workaround:

const { get } = require('lodash');
const page = get(res.getBody(), 'page');
console.log('page', page);

With this PR, the res object can now be used both as an object and as a function, providing a more convenient way to scripts.

Contribution Checklist:

• The pull request only addresses one issue or adds one feature.
• The pull request does not introduce any breaking changes
• I have added screenshots or gifs to help explain the change if applicable.
• I have read the contribution guidelines.
• Create an issue and link to the pull request.

[Kenttleton]

This doesn't satisfy the full feature. lodash.get does not support array filtering.

[Kenttleton]

Check out the examples given in the docs. The solution should satisfy the example inputs and outputs as written.

[Pragadesh-45]

@Kenttleton Thanks for your valuable input. I will update this PR

[Kenttleton]

I recommend using the JSONPath library instead of lodash as it gets you most of the way there. This lib is also used in Bruno to filter responses and has a similar syntax as the docs. Don't forget to add an optional callback to the signature for further refinements and please provide test cases for your implementation.