Fixed speed limits in Czech Republic

[kukulich]

Issue

If I understand it correctly, 0 means that the road type has no speed limit. However, in the Czech Republic, there are standard speed limits.

Tasklist

• [X] CHANGELOG.md entry (How to write a changelog entry)
• [ ] update relevant Wiki pages
• [ ] add tests (see testing documentation)
• [ ] review
• [ ] adjust for comments

[frodrigo]

Looks good to me and match https://wiki.openstreetmap.org/wiki/Default_speed_limits#cite_ref-:41_158-0

Removing this values will fallback to default.

• trunk = 110,
• motorway = 130