refactor(config): use @heroku/sdk

[erika-wallace]

Summary

This PR migrates the following config commands to use @heroku/sdk:

• config/edit
• config/get
• config/index
• config/set
• config/unset

Details:

• Replaced direct API calls with the SDK
• Rewrote tests to stub the SDK directly instead of using nock

Type of Change

Breaking Changes (major semver update)

• Add a ! after your change type to denote a change that breaks current behavior

Feature Additions (minor semver update)

• feat: Introduces a new feature to the codebase

Patch Updates (patch semver update)

• fix: Bug fix
• deps: Dependency upgrade
• revert: Revert a previous commit
• chore: Change that does not affect production code
• refactor: Refactoring existing code without changing behavior
• test: Add/update/remove tests

Testing

Notes:

The SDK uses heroku-fetch to make API calls, which looks for a netrc file. Therefore, we must log in with HEROKU_NETRC_WRITE=true.

Setup:

• Pull down this branch
• npm i && npm run build
• heroku logout
• HEROKU_NETRC_WRITE=true ./bin/run login

Steps:

# Sets config vars
./bin/run config:set TEST_ONE=test1 TEST_TWO=test2 --app $APP

# Lists new config vars
./bin/run config --app $APP

# Opens an editor for config var updates (update the value of TEST_ONE only)
./bin/run config:edit --app $APP

# Gets config vars (TEST_ONE should be updated, TEST_TWO should be the same)
./bin/run config:get TEST_ONE TEST_TWO --app $APP

#Unset config vars
./bin/run config:unset TEST_ONE TEST_TWO --app $APP

Cleanup:

• ./bin/run logout

Screenshots (if applicable)

Related Issues

GUS work item: W-23387800

[tlowrimore-heroku]

LGTM!