add rdoc documentation to ruby code

[andreas-stuerz]

No description provided.

[codecov]

Codecov Report

Merging #3 (8836117) into main (54d41aa) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main        #3   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            8         8           
  Lines          172       173    +1     
=========================================
+ Hits           172       173    +1     

Impacted Files	Coverage Δ
...puppet/provider/opnsense_device/opnsense_device.rb	100.00% <ø> (ø)
...opnsense_firewall_alias/opnsense_firewall_alias.rb	100.00% <ø> (ø)
lib/puppet/provider/opnsense_provider.rb	100.00% <ø> (ø)
lib/puppet/provider/opnsense_sensitive.rb	100.00% <ø> (ø)
...puppet/provider/opnsense_plugin/opnsense_plugin.rb	100.00% <100.00%> (ø)

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