Fix unresolved Lib.* and Drawing.* methods in PyCharm/ VS Code

[Lexachoc]

Closes #8060

This may also affect other IDEs, but I only use PyCharm/ VS Code, so it would be helpful if others could confirm.

The same problem also occurs in:

plotly.js/src/components/drawing/index.js

Line 23 in f618df5

var drawing = (module.exports = {});

---

Ther are more similar issues when running PyCharm's Unresolved reference inspection.

For example:

plotly.js/src/traces/quiver/attributes.js

Line 9 in f618df5

var annotationAttrs = require('../../components/annotations/attributes');

plotly.js/src/traces/quiver/attributes.js

Line 108 in f618df5

arrowsize: extendFlat({}, annotationAttrs.arrowsize, {

I get:

Unresolved variable arrowsize

In this case, annotations/attributes.js exports the attributes by:

plotly.js/src/components/annotations/attributes.js

Line 36 in f618df5

module.exports = templatedArray('annotation', {

PyCharm doesn't like that.
Making the export more explicit would require a somewhat larger refactor, for example:

- module.exports = templatedArray('annotation', {
+ var attrs = {
      visible: {
          // ...
      },
      // ...
- });
+ };
+ 
+ templatedArray('annotation', attrs);
+ 
+ module.exports = attrs;

Therefore I didn't include fix for these cases in this PR.

[Lexachoc]

I don't have permission to add the no-draftlog label. If draftlog is not needed, could someone add it for me?