fix(games): better player substitute events

[garrappachc]

Implement substituteRequested, substituteCanceled and playerReplaced events.
Do not get rid of the substituteRequestsChange event as of now, although mark it as deprecated.

[codecov]

Codecov Report

Merging #1218 (ef795c7) into master (f3118c4) will decrease coverage by 0.12%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1218      +/-   ##
==========================================
- Coverage   95.11%   94.98%   -0.13%     
==========================================
  Files         181      181              
  Lines        3624     3631       +7     
  Branches      326      326              
==========================================
+ Hits         3447     3449       +2     
- Misses        175      180       +5     
  Partials        2        2              

Impacted Files	Coverage Δ
src/events/events.ts	100.00% <100.00%> (ø)
src/games/services/player-substitution.service.ts	98.41% <100.00%> (+0.05%)	⬆️
src/games/services/rcon-factory.service.ts	33.33% <0.00%> (-55.56%)	⬇️

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