Minetest 5.1-dev+ mod: Simple helicopter

• originally by Pavel_S
• reworked by DS

Licenses

REUSE is used.

Code: GPL-2.0-or-later AND Apache-2.0 AND CC0-1.0

Media: CC-BY-NC-SA-3.0 AND CC-BY-NC-SA-4.0 AND CC-BY-SA-4.0 AND CC0-1.0

For copyright holders and more fine grained licenses, see the copyright header of each file, or the file's dot license file, if existent, or .reuse/dep5.

TODO

• Add helicopter variant from old_model branch to master. (Should be new item, such that players can use both. Maybe use different specs, like motor strength.)
• Add screenshot and description
• Fix that z-fighting