Add a non minified version of autoComplete.js

[mgautierfr]

Fix #819

[veloman-yunkan]

I think it's time to define the procedure of how parts from other open source projects must be imported into OpenZIM &/| Kiwix projects. Questions to consider:

1. How and where attribution should be made? Is a mention in README enough or we have to include it in every imported file? If more than one file is imported maybe we should place them under their own subdirectory and only add a single ATTRIBUTION.md file? Should there be any difference between files that are only used during build vs those files that are exposed to the end-user?
2. Similar questions for the license of imported files.
3. Regarding sources (autoComplete.js in this case) and end-user-artifacts (autoComplete.min.js in this case) - having both files without the process that produces the latter from the former doesn't fully meet the justification for preserving the original sources in our own project/repository. In the light of that argument, do we really have to import the sources too? If yes, in which situations?

[veloman-yunkan]

1. The version string should be 10.2.6
2. If attribution is going to be embedded into imported files it must be added to autoComplete.js and autoComplete.min.js too.
3. This change should result in changed KIWIXCACHEIDs - the unit tests must be updated.

[mgautierfr]

1. Done
2. autoComplete.css is modified from original autoComplete.css so the small header. Other files (js) are not modified and so I prefer not change them.
3. Done

[kelson42]

It seems we should also put the license of this piece of code

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 38.92%. Comparing base (d2c031e) to head (bcbdce6).
Report is 209 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1008   +/-   ##
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  Coverage   38.92%   38.92%           
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  Files          58       58           
  Lines        3990     3990           
  Branches     2201     2201           
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  Hits         1553     1553           
  Misses       1090     1090           
  Partials     1347     1347           

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