clean up problems tab in vs code

[ssundahlTTD]

• changed spelling errors to hints
• fixed the one actual problem
• exhaustively opened all files to check for problems (the file has to be open in the editor)

[ashleysmithTTD]

Do you think its beneficial to add the common "words" that cspell isnt going to recognize like "ssportal" and "knex" to a file? that way it makes it easier, no matter if the spelling issues are showing up as a hint or error, to distinguish between a spelling error that we want to change and one we want to ignore because its correct, just not a normal word?