feat: add support for `test` command

[felangel]

As a developer, I want to be able to easily run tests and collect coverage for my projects so that I can identify failing tests and gaps in code coverage.

# run tests for current project (flutter/dart)
very_good test

# run tests recursively
very_good test --recursive

# run tests for specific project
very_good test ./path/to/my/project

# run tests with coverage generates coverage report at coverage/lcov.info
very_good test --coverage

# run tests with coverage generates coverage report at custom/path/lcov.info
very_good test --coverage --coverage-path ./custom/path

# run tests with coverage and exclude files from coverage
very_good test --coverage --coverage-exclude "*.g.dart"

# run tests with coverage and exit(1) if coverage is below min coverage threshold
very_good test --coverage --min-coverage 100

# run tests with coverage and output coverage results as html report
very_good test --coverage --report html

# run tests with coverage and output coverage results as json output
very_good test --coverage --report json

# run tests without running "pub get" first
very_good test --no-pub

# run tests in a random order
very_good test --test-randomize-ordering-seed random

[orestesgaolin]

In the context of the https://github.com/VGVentures/employees/discussions/234 I would request for bringing improvement suggested by @jorgecoca to very_good_cli along with the test command. Long test duration with coverage is one of the major pains across multiple projects and we would be super excited to have a standardized solution to this problem.

[felangel]

In the context of the VGVentures/employees#234 I would request for bringing improvement suggested by @jorgecoca to very_good_cli along with the test command. Long test duration with coverage is one of the major pains across multiple projects and we would be super excited to have a standardized solution to this problem.

Yup definitely agree that internal optimizations for test performance should be considered when implementing this 👍

[jolexxa]

Linking to VeryGoodOpenSource/very_good_coverage#20 as it seems relevant to this discussion

[mtwichel]

Also adding https://pub.dev/packages/coverde to the discussion - it looks like it supports a lot of the html report generation that this aims to achive, so it may be helpful either as a dependency (although it looks like it would need to expose a lot of its interal logic for that) or just inspiration.

[marcossevilla]

Also adding https://pub.dev/packages/coverde to the discussion - it looks like it supports a lot of the html report generation that this aims to achive, so it may be helpful either as a dependency (although it looks like it would need to expose a lot of its interal logic for that) or just inspiration.

tagging his creator 👉 @mrverdant13