[CI]: Add Dockerfile for building docs

[synchon]

• description of feature/fix
• tests added/passed
• add an entry for the latest changes

This PR adds a Dockerfile for building docs and a gh-action workflow file for building and publishing the actual image.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.31%. Comparing base (7411dcc) to head (d586606).
Report is 14 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #373   +/-   ##
=======================================
  Coverage   88.31%   88.31%           
=======================================
  Files          93       93           
  Lines        5067     5067           
  Branches     1031     1031           
=======================================
  Hits         4475     4475           
  Misses        426      426           
  Partials      166      166           

Flag	Coverage Δ
docs	100.00% <ø> (ø)

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[github-actions]

PR Preview Action v1.4.8
🚀 Deployed preview to https://juaml.github.io/junifer/pr-preview/pr-373/
on branch gh-pages at 2024-10-10 16:07 UTC