Added stale.yml to automatically close stale issues

[vania-pooh]

No description provided.

[codecov]

Codecov Report

Merging #54 into master will decrease coverage by 2.18%.
The diff coverage is 72.72%.

@@            Coverage Diff             @@
##           master      #54      +/-   ##
==========================================
- Coverage   57.08%   54.89%   -2.19%     
==========================================
  Files           3        3              
  Lines         233      235       +2     
==========================================
- Hits          133      129       -4     
- Misses         88       92       +4     
- Partials       12       14       +2     

Flag	Coverage Δ
#go	54.89% <72.72%> (?)
#unittests	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
ggr-ui.go	57.23% <62.50%> (-3.43%)	⬇️
main.go	52.63% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 304b2d4...7ace0b8. Read the comment docs.