An Kotlin compiler plugin template example

A small example of a Kotlin compiler plugin to calculate the sum of sized of the properties in data classes powered by arrow-meta.

Tasks:

• implement the plugin's body in the AddShallowSizeMethod plugin (replace all TODOs)
• rewrite tests to parameterized tests in the shalowSizePluginTest module
• add an GitHub action to build the plugin, run the tests and check the code quality

Note: Intellij Idea highlight shallowSize method in tests as an error, it is ok since the Kotlin compiler API with the old front-end requires implementing an additional Intellij Idea plugin to fix it. Just run tests and it will works correctly