feat: server document formatting

[antico5]

• Removed all formatting related code from client
• Added textDocument/formatting handling on the server
• Adapted/fixed the formatting logic to work on the server side properly
• Added extension config sync between client and server, since config is not naturally available from the server
• Tested and added some docs for coc-solidity
• Protocol tests for all formatting providers

Closes #300

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (development@391baa4). Click here to learn what that means.
The diff coverage is n/a.

❗ Current head 4380ae5 differs from pull request most recent head 606e19a. Consider uploading reports for the commit 606e19a to get more accurate results

📣 This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

@@              Coverage Diff               @@
##             development     #429   +/-   ##
==============================================
  Coverage               ?   55.24%           
==============================================
  Files                  ?      179           
  Lines                  ?     4545           
  Branches               ?      750           
==============================================
  Hits                   ?     2511           
  Misses                 ?     1798           
  Partials               ?      236           

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[kanej]

Looks good.