Create default environments on openapi import using server url

[anusreesubash]

Fixes: #1239
Closes PRs: #1240, #2261

1. Instead of separate variables protocol and host, this change creates a single environment variable basePath
2. Loops through all server urls and create environments for each of them separately
3. Creates environments using the server description if that doesnot exists creates environment as Environment 1(2, 3, ...)

Screen.Recording.2024-10-08.161058.mp4

[kevinpapst]

Looks fantastic, so I can finally use OpenAPI imports with Bruno. Up until now this missing piece is the one major pain point and the reason why I never really used Bruno since I purchased it months ago. Thanks for working on it 👍

For everyone else reading, you can achieve the baseUrl with a Pre Request script, which you save in your Collection:

req.setUrl(bru.getEnvVar('baseUrl') + req.url);

[kevinpapst]

@helloanoop this PR was supposed to close #2261 - see initial description - but it is still open