feat: introduce usage analytics

[hbagdi]

Analytics were temporarily removed as we sent them to a third-party
server.
With this new implementation, these are being sent to Kong Inc directly.

Furthermore, to alleviate concerns raised
in #242, we are now providing a flag on
the root-level, in addition to DECK_ANALYTICS environment variable to
tweak the setting.

[codecov-commenter]

Codecov Report

Merging #379 (82fd70b) into main (8fa14fe) will decrease coverage by 0.59%.
The diff coverage is 5.63%.

@@            Coverage Diff             @@
##             main     #379      +/-   ##
==========================================
- Coverage   54.19%   53.59%   -0.60%     
==========================================
  Files          61       62       +1     
  Lines        4971     5034      +63     
==========================================
+ Hits         2694     2698       +4     
- Misses       1978     2037      +59     
  Partials      299      299              

Impacted Files	Coverage Δ
cmd/common.go	0.00% <0.00%> (ø)
cmd/dump.go	25.26% <0.00%> (-1.12%)	⬇️
cmd/konnect_diff.go	73.68% <0.00%> (-4.10%)	⬇️
cmd/konnect_dump.go	26.53% <0.00%> (-0.56%)	⬇️
cmd/konnect_ping.go	6.66% <0.00%> (-0.48%)	⬇️
cmd/konnect_sync.go	66.66% <0.00%> (-4.77%)	⬇️
cmd/ping.go	33.33% <0.00%> (-2.39%)	⬇️
cmd/reset.go	26.15% <0.00%> (-1.72%)	⬇️
cmd/validate.go	22.58% <0.00%> (-0.76%)	⬇️
utils/analytics.go	0.00% <0.00%> (ø)
... and 2 more

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