Make array of commands static

[daniel-levin]

A minor non-functional change - I noticed there were was a Vec of CommandInfos where a static array would do fine.

[jclulow]

Can name and desc just be a &static str in that case?

[daniel-levin]

Indeed, they can and it'd make sense for them to be!

[daniel-levin]

Force pushed an update with this change and the associated removals of allocations.

 struct CommandInfo {
-    name: String,
-    desc: String,
+    name: &'static str,
+    desc: &'static str