Migrate ResumePlugin to BookReaderPlugin

[cdrini]

Blocked by #1374 , so ignore the autoplay files in this diff.

Testing:

1. Go to the netlify review app https://deploy-preview-1375--lucid-poitras-9a1249.netlify.app/bookreaderdemo/demo-internetarchive?ocaid=theworksofplato01platiala
2. Go to a page
3. Remove the #... fragment from the url and reload the page
4. ✅ Should be sent back to the same page

Breaking changes:

• BookReader#getResumeValue() moved to BookReader._plugins.resume.getResumeValue(). Similarly for getCookiePath, and updateResumeValue .
• The option enablePageResume: bool has been renamed to plugins.resume.enabled: bool
• The option resumeCookiePath: string has been renamed to plugins.resume.cookiePath: string

[codecov]

Codecov Report

Attention: Patch coverage is 76.08696% with 22 lines in your changes missing coverage. Please review.

Project coverage is 69.21%. Comparing base (c067962) to head (44d12df).

Files with missing lines	Patch %	Lines
src/plugins/plugin.autoplay.js	70.83%	14 Missing ⚠️
src/BookReader.js	73.68%	5 Missing ⚠️
src/BookReader/Mode2UpLit.js	0.00%	2 Missing ⚠️
src/plugins/url/plugin.url.js	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1375      +/-   ##
==========================================
- Coverage   69.25%   69.21%   -0.04%     
==========================================
  Files          60       60              
  Lines        5135     5146      +11     
  Branches     1087     1102      +15     
==========================================
+ Hits         3556     3562       +6     
- Misses       1550     1555       +5     
  Partials       29       29              

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