Add missing SQL comment highlighting in codefences

[LockeBirdsey]

Was sketching out some DB stuff and noticed SQL comments weren't supported in QOwnNotes.

This PR enables the following SQL comment styles to be used:

CREATE TABLE table ();
-- single line comments
SELECT * FROM table;
/* multi-
  line comments
*/
DELETE FROM table; /* strange usage of multiline comments */

It also prevents the use of // as they aren't supported in SQL

[pbek]

Thank you very much!

[pbek]

Will be in the next release of QOwnNotes...

25.2.1

• Support was added SQL comments in code blocks for the SQL syntax highlighter
  (for #215, thank you, @LockeBirdsey)

[pbek]

There now is a new release, could you please test it and report if it works for you?

[LockeBirdsey]

There now is a new release, could you please test it and report if it works for you?

Yep, it's working as intended

[pbek]

Great, thank you for testing!