chore: Update formatting

[TimothyJones]

This PR removes standard eslint settings, and adds prettier, reformatting the code to match.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 96.99571% with 28 lines in your changes missing coverage. Please review.

Project coverage is 97.65%. Comparing base (b77b842) to head (6b26ba5).
Report is 44 commits behind head on master.

Files with missing lines	Patch %	Lines
lib/updaters/index.js	59.09%	9 Missing ⚠️
test/core.spec.js	98.58%	4 Missing ⚠️
test/config-files.spec.js	96.00%	3 Missing ⚠️
command.js	75.00%	2 Missing ⚠️
lib/run-execFile.js	77.77%	2 Missing ⚠️
test/git.spec.js	98.78%	2 Missing ⚠️
lib/configuration.js	91.66%	1 Missing ⚠️
lib/lifecycles/bump.js	98.57%	1 Missing ⚠️
lib/lifecycles/commit.js	96.29%	1 Missing ⚠️
lib/updaters/types/csproj.js	80.00%	1 Missing ⚠️
... and 2 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #114      +/-   ##
==========================================
- Coverage   97.71%   97.65%   -0.07%     
==========================================
  Files          32       32              
  Lines        1359     1362       +3     
==========================================
+ Hits         1328     1330       +2     
- Misses         31       32       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.