fix: Fixed automatic quotes choice in few cases

[pamburus]

Fixes

• Backticks were selected if string contained only single quotes and no other special characters
• Single quotes were selected if string contained backslashes

Now

• Now double quotes are selected if string contains only single quotes
• Now backticks are selected if string contains backslashes but no backticks

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.38%. Comparing base (834b33a) to head (ec9ed94).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #243      +/-   ##
==========================================
+ Coverage   54.61%   56.38%   +1.76%     
==========================================
  Files          38       38              
  Lines        9473     9629     +156     
==========================================
+ Hits         5174     5429     +255     
+ Misses       4299     4200      -99     

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