Add multilingual spell checker pre-commit hook

[nifadyev]

A lot of open and closed issues are simple typos. Spell checking should be automated on pre-commit stage (and later in CI). Discussed with @satwikkansal here

Suggested options:

• cspell - default vscode checker how to add multiple languages in pre-commit
• typos - fast Rust based checker, most likely English only

[satwikkansal]

Let's stick to cspell since we're going to use it across translations.