[Suggestion] Previewing requests

[LukeBillo]

Problem

I have a (relatively) complicated set up involving quite a lot of variables at differing levels - environment, collection and request-specific. Before sending my request, I am prone to mistakes (forgetting to set a particular variable, being on the wrong environment) and may make an unintended request.

Proposed Solution

In a similar to fashion to Insomnia, allow users to see the request that the currently selected environment and variables would result in.

As an example:

meta {
  name: GET some resource
  type: http
  seq: 15
}

get {
  url: http://my-service{{ suffix }}/some-resource/{{ resourceId }}
  body: json
}

headers {
  Content-Type: application/json
  TenantId: {{ tenantId }}
}

body:json {
  {
    "testMe": {{ someValue }}
  }
}

vars:pre-request {
  resourceId: '12345'
  someValue: 'test'
}

When viewing this in the GUI, I'd expect to see the URL displayed something like:

http://my-service[suffix: 'production.url']/some-resource/[resourceId: '12345']

Assuming suffix: 'production.url' is set at an environment level, and resourceId: '12345' set at the request-level. This could also show in other places, such as when viewing the body:

{
  "testMe": [someValue: 'test']
}

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Hopefully this issue format is alright - I couldn't find an issue template in your contributing guidelines. Feel free to close and ask me to open a new one with a particular format if it's unacceptable.

While I'm here, I'd just like to say that I've recently migrated from Insomnia (due to their recent changes) and I'm really enjoying Bruno. Thank you for a great tool, and I will consider contributing if I get some spare time.