Combine same job change titles in Resumes

[Sergio Xalambrí]

Is your feature request related to a problem? Please describe.
Right now if you changed your title while workin on a company you need to create multiple work items and they will be displayed independently.

Describe the solution you'd like
Use a similar approach as LinkedIn and show them grouped together as a single work experience with a timeline of titles.

Additional context
Examples:

• https://sergiodxa.com/cv/
• https://github.com/sergiodxa/personal-site/blob/master/resume.json#L31-L50