odamex: 0.7.0 -> 0.8.1 (#69718)

* odamex: 0.7.0 -> 0.8.1

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/odamex/versions

* odamex: revamp

+ use pname and version
+ not broken anymore
+ restrict to Linux (never built on Darwin)
+ add wxGTK to build odalaunch client