Apply LintPlugin to Java projects to leverage lint from non-android projects.

[vanniktech]

Fixes #142

[codecov]

Codecov Report

Merging #145 into master will increase coverage by 0.21%.
The diff coverage is 93.33%.

@@             Coverage Diff             @@
##             master    #145      +/-   ##
===========================================
+ Coverage     70.69%   70.9%   +0.21%     
- Complexity       94      97       +3     
===========================================
  Files             5       5              
  Lines           273     275       +2     
  Branches         40      43       +3     
===========================================
+ Hits            193     195       +2     
  Misses           68      68              
  Partials         12      12

Impacted Files	Coverage Δ	Complexity Δ
...com/vanniktech/code/quality/tools/LintExtension.kt	100% <ø> (ø)	12 <0> (ø)	⬇️
...h/code/quality/tools/CodeQualityToolsPlugin.groovy	75.75% <93.33%> (+0.21%)	84 <0> (+3)	⬆️

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