[Merged] MagicOnMob VerificationHandler

[Tomm0017]

Addresses Issue #335 where a VerificationHandler for MagicOnMobMessage is requested. Verifies the following conditions:

The Mob exists (i.e. index is valid)
Type of the Mob matches the Mob at the index
The Mob is within distance of the player

The verification for combat related conditions are left for plugins to handle.

[codecov-io]

Codecov Report

Merging #426 into kotlin-experiments will decrease coverage by 0.03%.
The diff coverage is 0%.

@@                   Coverage Diff                    @@
##             kotlin-experiments     #426      +/-   ##
========================================================
- Coverage                 23.23%   23.19%   -0.04%     
  Complexity                  811      811              
========================================================
  Files                       643      644       +1     
  Lines                     11123    11139      +16     
  Branches                   1632     1636       +4     
========================================================
  Hits                       2584     2584              
- Misses                     8251     8267      +16     
  Partials                    288      288

Impacted Files	Coverage Δ	Complexity Δ
...message/handler/MagicOnMobVerificationHandler.java	0% <0%> (ø)	0 <0> (?)
...rg/apollo/game/message/impl/MagicOnMobMessage.java	0% <0%> (ø)	0 <0> (ø)	⬇️

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[Major-]

Merged in 1b3f1ab.