Fixed #138 Added PHP-Scoper to build to prevent dependency conflicts.

[danielmorell]

Description of the change

This PR fixes #136. It adds a build script to build the plugin distribution files. As part of the build process it now scopes all dependencies into a new RollbarWP namespace.

Type of change

• Bug fix (non-breaking change that fixes an issue)

Related issues

• Fix Fixed/issue 137 cannot save production environment #138

Checklists

Development

• Lint rules pass locally
• The code changed/added as part of this pull request has been covered with tests
• All tests related to the changed code pass in development

Code review

• This pull request has a descriptive title and information useful to a reviewer. There may be a screenshot or screencast attached
• "Ready for review" label attached to the PR and reviewers assigned
• Issue from task tracker has a link to this pull request
• Changes have been reviewed by at least one other engineer

[danielmorell]

This moves us a little closer to resolving #79. However, there are still a few more steps that can be automated.

[brianr]

I'm wondering about testing. Do we, or could we, have tests that ensure that the package as built by this script functions correctly? (For example, could we have the existing test suite test what's built by this script.)

[danielmorell]

I had to think about this one for a while. We probably could add tests.

We would need to install the test dependencies in seperate vendor directory e.g. vendor_test in the dist directory. From there we should be able to copy the files from the root of the repo needed to run tests: tests, .wp.env.json, package.json, package-lock.json, phpcs.xml, and phpunit.xml.

I believe at that point the dist directory could run the test suite the same as the we do with the repo normally.

[danielmorell]

Turns out as long as we run the composer install for our bundled dependencies during the build when we run composer install again later to add our test dependencies the bundled dependencies won't be modified. Because of that we don't need a vendor_dist directory.