Add tier() and neutralItem() methods in Dota2 VideoGameProvider and update data

[therepanic]

• Added tier() and neutralItem() methods in Dota2.class
• Updated the data in dota2.yml
• Updated the test for dota2HeroQuote()

[what-the-diff]

PR Summary

• Introduction of the method neutralItem()
  A new functionality called neutralItem() has been added to the Dota2.java file. This aims to provide a new aspect to the application by managing neutral items within Dota 2.

• Implementation of the tier() method
  This pull request also involves the inclusion of a method called tier() in the Dota2.java file. This enhancement is designed to manage and categorize different tiers of items in Dota 2, hence making the game more organized.

• Adjustments to Dota2Test.java file
  The Dota2Test.java file has been updated as well to incorporate the newly introduced neutralItem() and tier() methods in the test cases. This ensures that these changes are accurately tested, guaranteeing their proper functionality.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.12%. Comparing base (2234d3c) to head (3c4f1a7).
Report is 72 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1342      +/-   ##
============================================
+ Coverage     91.75%   92.12%   +0.36%     
- Complexity     3094     3142      +48     
============================================
  Files           311      318       +7     
  Lines          6090     6193     +103     
  Branches        631      612      -19     
============================================
+ Hits           5588     5705     +117     
+ Misses          344      339       -5     
+ Partials        158      149       -9     

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[kingthorin]

I'm pretty sure possessive was correct, not plural.

[therepanic]

I did this because I wasn't sure if the tests would pass if the hero name in dota2.yml was spelled like this:

nature`s_prophet:
    quote:

[kingthorin]

Oh okay