feat(605): Show Response Image

[SoulKa]

Changes

• Add UI concept where the user can switch response display between "raw" in Monaco Editor and "pretty" depending on the response content-type
• Support rendering response images
• Add extensible code base for pretty renderers for any content-type. Can later add e.g. PDF display and SVG?
• Support selecting the encoding for response body reading using IpcPushStream
• Make EventEmitter typesafe

Testing

Checklist

• Issue has been linked to this PR
• Code has been reviewed by person creating the PR
• Automated tests have been written, if possible
• Manual testing has been performed
• Documentation has been updated, if necessary
• Changes have been reviewed by second person