add KDE Neon support

[chuckyz]

Trying out Itamae for local laptop management and found that Neon support was missing in specinfra. This adds it in. :)

Test itamae recipe:

http_request 'testing' do
  url "https://raw.githubusercontent.com/mizzy/specinfra/master/examples/multiple_backends.rb"
  action :get
  mode '0644'
end

Results:

itamae local test.rb
 INFO : Starting Itamae... 
 INFO : Recipe: /home/[snipped]/test.rb
 INFO :   http_request[testing] modified will change from 'false' to 'true'
 INFO :   http_request[testing] mode will be '0644'
 INFO :   diff:
 INFO :   --- testing (BEFORE)
 INFO :   +++ testing (AFTER)
 INFO :   @@ -0,0 +1,46 @@
 INFO :   +require 'specinfra'
 INFO :   +require 'pp'

[chuckyz]

Tests seem to have failed with github timeouts, maybe another outage. :(

[mizzy]

Thanks!

[mizzy]

Released as v2.85.1.