chore: rename repo to match other languages

[chingor13]

To match other languages, we renamed this repo. This PR fixes all the references to the repo within the codebase.

[codecov]

Codecov Report

Merging #178 into master will increase coverage by 0.16%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #178      +/-   ##
============================================
+ Coverage     75.10%   75.26%   +0.16%     
+ Complexity      274      245      -29     
============================================
  Files            24       24              
  Lines          2470     2361     -109     
  Branches         22       22              
============================================
- Hits           1855     1777      -78     
+ Misses          587      573      -14     
+ Partials         28       11      -17     

Impacted Files	Coverage Δ	Complexity Δ
.../v1beta/stub/GrpcGameServerConfigsServiceStub.java	89.28% <0.00%> (-0.64%)	11.00% <0.00%> (-1.00%)
...loud/gaming/v1beta/stub/GrpcRealmsServiceStub.java	91.89% <0.00%> (-0.57%)	13.00% <0.00%> (-1.00%)
...v1beta/stub/GrpcGameServerClustersServiceStub.java	93.50% <0.00%> (-0.46%)	15.00% <0.00%> (-1.00%)
...eta/stub/GrpcGameServerDeploymentsServiceStub.java	93.72% <0.00%> (-0.45%)	16.00% <0.00%> (-1.00%)
...eta/stub/GameServerConfigsServiceStubSettings.java	85.20% <0.00%> (-0.37%)	15.00% <0.00%> (-1.00%)
...ta/stub/GameServerClustersServiceStubSettings.java	85.13% <0.00%> (-0.28%)	20.00% <0.00%> (-1.00%)
.../gaming/v1beta/stub/RealmsServiceStubSettings.java	87.23% <0.00%> (-0.27%)	18.00% <0.00%> (-1.00%)
...stub/GameServerDeploymentsServiceStubSettings.java	85.57% <0.00%> (-0.23%)	22.00% <0.00%> (-1.00%)
...oogle/cloud/gaming/v1beta/RealmsServiceClient.java	55.42% <0.00%> (+2.08%)	20.00% <0.00%> (-5.00%)	⬆️
...gaming/v1beta/GameServerClustersServiceClient.java	64.58% <0.00%> (+4.20%)	24.00% <0.00%> (-5.00%)	⬆️
... and 2 more

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