Create plotly widget to read plots provided by the metrics website and display them

In order to use bitergia within the PMI we decided to utilise the plotly charts that the metrics website will provide https://gitlab.eclipse.org/eclipsefdn/emo-team/internal/eclipse-metrics/-/issues/172#note_5325032.

The idea is to have a project-metrics widget that given a project id, and desired display (commits, commits/org, commits/indivitual, issues, reviews) will internally build the target url to fetch that chart from the metrics website provided JSON files under https://metrics.eclipse.org/plots/projects/<project_id>_plt_<display>.json

For reference please see https://gitlab.eclipse.org/eclipsefdn/emo-team/internal/eclipse-metrics/-/issues/172, eclipsefdn/software-dev/websites/projects.eclipse.org#350