Use jupyterlab-fonts for style

[bollwyvl]

References

• continues Add foreground, background layers #15
• enables Offer per-slide layout and deck-level defaults #21

Changes

• make jupyterlab-fonts a python and JS dependency
• replace home-grown style with jupyterlab-fonts
• add a UI for configuring presentation style
• docs
• tests

Notes

The JSON (and what it generates) is a bit convoluted:

   "metadata": {
    "@deathbeds/jupyterlab-fonts": {
     "styles": {
      "": {
       "body[data-jp-deck-mode='presenting'] &": {
        "bottom": 0,
        "left": 0,
        "margin": "auto",
        "opacity": "0.25",
        "pointer-events": "none",
        "right": 0,
        "top": 0,
        "width": "50%",
        "z-index": -1
       }
      }
     }
    },

body[data-jp-deck-mode='presenting'] .jp-NotebookPanel[id='id-a91b8119-872c-4d8c-af12-6e33a70d27b5'] .jp-Cell[data-jpf-cell-id="43e53706-854f-466c-a233-050a430e7f84"]  {
  top: 0;
  left: 0;
  right: 0;
  width: 50%;
  bottom: 0;
  margin: auto;
  opacity: 0.25;
  z-index: -1;
  pointer-events: none;
}

[codecov]

Codecov Report

Merging #24 (6c4ae67) into main (18e6601) will decrease coverage by 5.04%.
The diff coverage is 64.81%.

❗ Current head 6c4ae67 differs from pull request most recent head 044335c. Consider uploading reports for the commit 044335c to get more accurate results

@@            Coverage Diff             @@
##             main      #24      +/-   ##
==========================================
- Coverage   94.06%   89.02%   -5.05%     
==========================================
  Files          11       11              
  Lines         674      756      +82     
  Branches      128      146      +18     
==========================================
+ Hits          634      673      +39     
- Misses         22       57      +35     
- Partials       18       26       +8     

Flag	Coverage Δ
back-end	100.00% <ø> (ø)
front-end	88.75% <64.81%> (-5.15%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
js/jupyterlab-deck/src/plugin.ts	100.00% <ø> (ø)
js/jupyterlab-deck/src/notebook/presenter.ts	86.39% <28.57%> (-7.50%)	⬇️
js/jupyterlab-deck/src/remote.tsx	81.25% <33.33%> (-4.96%)	⬇️
js/jupyterlab-deck/src/manager.ts	87.75% <68.42%> (-4.43%)	⬇️
js/jupyterlab-deck/src/notebook/decktools.tsx	92.39% <88.88%> (-3.36%)	⬇️
js/jupyterlab-deck/src/tokens.ts	100.00% <100.00%> (ø)

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more