Use CSPELL to fix spelling errors and add custom dictionary

Starting position
CSpell: Files checked: 176, Issues found: 723 in 114 files

The downloaded file of spelling errors has precisely 100 words.

Added .cspell.json and included two core dictionaries. This reduced the errors
CSpell: Files checked: 176, Issues found: 195 in 59 files

The number of unrecognised words reduced to 69

After the gitlab_templates issue #3422323: Improve CSPELL → the top-level files are now being checked, when they were being ignored before. The current position is:

CSpell: Files checked: 195, Issues found: 168 in 57 files
The number of unrecognised/misspelled words is 72

CSpell: Files checked: 195, Issues found: 15 in 6 files
The number of unrecognised/misspelled words is 5

I am not going to add the five "misspelled" words to the custom dictionary right now as that would simply hide what I think needs investigation. The five words are

• parms - this is part of variable name in src/Form/SchedulerAdminForm.php $message_parms. I want to know if sub-parts of variable names really have to be full words
• randomstring - is a function call: 'name' => $values['title'] ?? $this->randomstring(12), so are all function names forced to be real words?
• tnid is part of array key in schema.yml 'tnid' => [ The keys nid and vid are not reported because the min word length is 4
• unrequired is a real word, in the Oxford English Dictionary so should be in one of the cspell dictionaries
• vals is a var in js/scheduler_vertical_tabs.js var vals = [];

Starting point for 8.x-1.x
CSpell: Files checked: 117, Issues found: 166 in 50 files
The number of unrecognised/misspelled words is 69

jonathan1055 → changed the visibility of the branch 2.x to hidden.

All spelling errors fixed in 2.x and 1.x

Automatically closed - issue fixed for 2 weeks with no activity.

The README "ignore" comments work for ignoring the words, but the comments are rendered in the file. The correct comment style is <!--- cSpell:disable --->
See https://git.drupalcode.org/project/gitlab_templates/-/merge_requests/202...

Automatically closed - issue fixed for 2 weeks with no activity.