feat: hourly reports analytics

[aldy505]

also, it turns out that the total handler was a massive joke lol. instead of counting the total message, instead, i just counted the total users.

and removing my aldy505/decrr in favor of pkg/errors

[codecov]

Codecov Report

Merging #19 (2889362) into master (e612a10) will increase coverage by 0.28%.
The diff coverage is 61.25%.

@@            Coverage Diff             @@
##           master      #19      +/-   ##
==========================================
+ Coverage   57.18%   57.47%   +0.28%     
==========================================
  Files          11       11              
  Lines         306      435     +129     
==========================================
+ Hits          175      250      +75     
- Misses        105      148      +43     
- Partials       26       37      +11     

Impacted Files	Coverage Δ
analytics/server/server.go	0.00% <0.00%> (ø)
analytics/server/repo.go	48.12% <52.87%> (+0.82%)	⬆️
analytics/incr.go	71.87% <83.33%> (+3.69%)	⬆️
analytics/migration.go	73.80% <88.23%> (+9.80%)	⬆️
analytics/msg.go	78.57% <100.00%> (ø)

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