Show ZWSP (zero with space) as code mining

[marcushoepfner]

Issue: #1002

For more information refer to https://www.compart.com/en/unicode/U+200B To get a ZWSP refer to https://zerowidthspace.me/

[mickaelistria]

Missing co[yright header

[github-actions]

Test Results

     900 files  +       1       900 suites  +1   46m 55s ⏱️ + 7m 56s
  7 470 tests ±       0    7 316 ✔️ +       2  153 💤 ±    0  1 ❌  - 1 
23 559 runs  +1 577  23 047 ✔️ +1 458  511 💤 +121  1 ❌  - 1 

For more details on these failures, see this check.

Results for commit e7d0acd. ± Comparison against base commit 44efc1d.

[BeckerWdf]

I did a quick manual test on macOS. I found the following issues:

1. code mining is not displayed emidiately. I have to close and reopen the editor for the code minings to be shown
2. Two ZWSP next to each other are drawn one the (almost?) same location. See line 4 in:

3. When select the "a" and the "ZWSP" in line 2 from the above screenshot to with the keyboard I have to press the right-cursor two times until the caret is behind the "ZWSP".

[BeckerWdf]

we should also add

\u200c  zero width non-joiner
\u200d  zero width joiner
\ufeff  zero width no break space

See: https://plugins.jetbrains.com/plugin/7448-zero-width-characters-locator