Apollo integration and migration due to package updates

[hyochan]

Description

• Apollo integration
• React Navigation v5 auth-flow migration
  • https://reactnavigation.org/docs/en/next/auth-flow.html
• Migrated auth-flow in favor of react-navigation v5 auth flow
  • resetRoot has been removed.
• Changed testID to kebab cases
• Implement signInEmail with mutation query.
• Implement signUp with mutation query.
• Decide root screen with queryMe query.

More migration

• styled-component v5
  • It is now necessary to use px unit in styled-components'.
• Add expo dependant packages to ncurc.json
• Migrate Asset in expo to expo-asset

Related Issues

#53

Tests

• Use apollo mock provider to test graphql apis.

Checklist

Before you create this PR confirms that it meets all requirements listed below by checking the relevant checkboxes ([x]). This will ensure a smooth and quick review process.

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I signed the [CLA].
• Run yarn test or yarn test -u if you need to update snapshot.
• Run yarn lint
• I am willing to follow-up on review comments in a timely manner.

[codecov]

Codecov Report

Merging #96 into master will decrease coverage by 1.23%.
The diff coverage is 87%.

@@            Coverage Diff             @@
##           master      #96      +/-   ##
==========================================
- Coverage   91.41%   90.18%   -1.24%     
==========================================
  Files          36       42       +6     
  Lines        1002     1110     +108     
  Branches      113      118       +5     
==========================================
+ Hits          916     1001      +85     
- Misses         38       57      +19     
- Partials       48       52       +4