[TASK] handle domain_code

[genofire]

fix #82

TODO

• in database
  • as node tag
  • in GlobalStats
• in output
  • filter for ease use old software (after [TASK] refactoring of filters #114)
    • add filter append domain_code at site_code
    • add filter replace site_code by domain_code

Checklist:

• My code follows the code style of this project.
• I have added also tests for my new code.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[codecov-io]

Codecov Report

Merging #119 into develop will increase coverage by 0.75%.
The diff coverage is 90.16%.

@@             Coverage Diff             @@
##           develop     #119      +/-   ##
===========================================
+ Coverage    75.81%   76.56%   +0.75%     
===========================================
  Files           44       47       +3     
  Lines         1414     1502      +88     
===========================================
+ Hits          1072     1150      +78     
- Misses         314      325      +11     
+ Partials        28       27       -1

Impacted Files	Coverage Δ
data/nodeinfo.go	100% <ø> (ø)	⬆️
database/database.go	100% <ø> (ø)	⬆️
database/all/connection.go	44.73% <0%> (-2.64%)	⬇️
cmd/query.go	20% <0%> (-1.43%)	⬇️
database/respondd/main.go	61.9% <0%> (ø)	⬆️
cmd/serve.go	9.09% <0%> (ø)	⬆️
cmd/import.go	13.04% <0%> (-1.25%)	⬇️
database/logging/file.go	100% <100%> (ø)	⬆️
output/filter/domainappendsite/domainappendsite.go	100% <100%> (ø)
database/influxdb/global.go	100% <100%> (ø)	⬆️
... and 12 more