Fix multiline default string

[Tigrov]

• Fix multiline default value of string / text
• Fix single quote in default value

Q	A
Is bugfix?	✔️
New feature?	❌
Breaks BC?	❌
Fixed issues	-

[what-the-diff]

PR Summary

• Enhancement in Schema Handling
  A modification has been made in our schema handling system, specifically Schema.php which includes a new rule for managing default values. This new rule effectively trades extra quotes in the default value for single quotes.
• Update in SchemaProvider.php
  The defaultValue for char_col has been updated to a certain value ('some\'thing'). Plus, a new character column (char_col4) is introduced which will hold multi-line default values.
• Adjustment in SQL Database Management
  In our database management file pgsql.sql, several changes are done: the defaultValue of char_col2 has been changed to 'some\'thing'. Also like previously mentioned change, we added another character column (char_col4) that takes multi-line default values.

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (56df5ac) 99.83% compared to head (edff453) 99.83%.

❗ Current head edff453 differs from pull request most recent head cfba6e8. Consider uploading reports for the commit cfba6e8 to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #295   +/-   ##
=========================================
  Coverage     99.83%   99.83%           
  Complexity      202      202           
=========================================
  Files            13       13           
  Lines           601      602    +1     
=========================================
+ Hits            600      601    +1     
  Misses            1        1           

Impacted Files	Coverage Δ
src/Schema.php	100.00% <100.00%> (ø)

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[vjik]

Please, add line to changelog

[vjik]

@Tigrov Need test for negative numeric default values whose support has been added by last commit. And add info about it to changelog also.

[samdark]

Created an issue for adding a test not to block release: #298

[samdark]

👍