[uk] Ukrainian translation of the “How to” section

[Andygol]

This PR contains translated/updated documentation pages in Ukrainian for v4 for the Intro section. This is essentially a translation from v3 with minor changes.

~PS This PR also contains changes that were included in the previous PRs #1921, #1925, #1927 (see commits 2f81f25b5563dd97999cb51c26d49574349ba95e, 1bef51f91b18c10a51cfe2661e82a321e912f697, 367dba749b08f554726bb8697d0b596fc074881a).~

PS Depends on PR https://github.com/helm/helm-www/pull/1925