added idea folder to gitignore

[judemanutd]

idea files contain configs local to the users environment which can be completely different so it's best not to track idea files

[codecov-io]

Codecov Report

Merging #241 into master will increase coverage by 0.21%. The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #241      +/-   ##
============================================
+ Coverage     36.98%   37.19%   +0.21%     
  Complexity       45       45              
============================================
  Files            39       36       -3     
  Lines           530      527       -3     
  Branches         27       27              
============================================
  Hits            196      196              
+ Misses          325      322       -3     
  Partials          9        9

Impacted Files	Coverage Δ	Complexity Δ
...in/qualitymatters/performance/AsyncJobsModule.java
...alitymatters/network/OkHttpInterceptorsModule.java
...rs/developer_settings/DeveloperSettingsModule.java

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 47e484b...8a95fec. Read the comment docs.

[artem-zinnatullin]

Can you please add exception !.idea/codeStyleSetting.xml because we intentionally share it? Otherwise lgtm