feat: add support for incrementing the version name

[luke-rogers]

Add support for incrementing the version name via the increment_version_name plugin

[edodusi]

@luke-rogers I think we should use gradle properties to better handle versioning.
So for example, taken from the fastlane docs:

gradle(
  # ...

  properties: {
    "android.injected.version.code" => 100,
    "android.injected.version.name" => "1.0.0",
    # ...
  }
)

Here we can set the version name to a specific value. This requires also a change in the app/build.gradle but so is using this plugin.

What do you think?

[luke-rogers]

I did go down a similar route when starting this but seemed to run into the issue documented here, hence switching to use the plugin instead. Although that was using the version overrides, rather than updating app/build.gradle directly.