[MOB-9138] Add ESLint + Prettier

[TheBuggedYRN]

Description of the change

Add lint checks using ESLint and format checks using Prettier.

Type of change

• [ ] Bug fix (non-breaking change that fixes an issue)
• [ ] New feature (non-breaking change that adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Related issues

Issue links go here

Checklists

Development

• [ ] Lint rules pass locally
• [ ] The code changed/added as part of this pull request has been covered with tests

Code review

• [ ] This pull request has a descriptive title and information useful to a reviewer
• [ ] Issue from task tracker has a link to this pull request

[codecov[bot]]

Codecov Report

Merging #802 (b17e7fb) into master (5f0e223) will increase coverage by 0.19%. The diff coverage is 98.52%.

@@             Coverage Diff              @@
##             master     #802      +/-   ##
============================================
+ Coverage     58.53%   58.72%   +0.19%     
  Complexity       91       91              
============================================
  Files            32       32              
  Lines          2489     2503      +14     
  Branches        239      239              
============================================
+ Hits           1457     1470      +13     
- Misses         1015     1016       +1     
  Partials         17       17              

Flag	Coverage Δ
android	38.92% <ø> (ø)
javascript	96.62% <98.52%> (-0.07%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/index.ts	0.00% <ø> (ø)
src/models/Report.ts	100.00% <ø> (ø)
src/modules/APM.ts	100.00% <ø> (ø)
src/modules/CrashReporting.ts	100.00% <ø> (ø)
src/modules/Replies.ts	100.00% <ø> (ø)
src/modules/Surveys.ts	100.00% <ø> (ø)
src/modules/Instabug.ts	99.52% <97.43%> (-0.48%)	:arrow_down:
src/modules/BugReporting.ts	100.00% <100.00%> (ø)
src/modules/FeatureRequests.ts	100.00% <100.00%> (ø)
src/modules/NetworkLogger.ts	100.00% <100.00%> (ø)
... and 3 more

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