set the jakartaPackages flag via a gradle property

[bjlaub]

Before this PR

This flag was previously set thusly in a build script:

conjure {
    java {
        jakartaPackages = true
    }
}

While that's still possible, it potentially causes problems when configuring subprojects due to evaluation order; the flag's value is not populated within the extension object until some time after the plugin application finishes, which results in incorrect dependencies getting added to some subprojects when they are set up in ConjurePlugin and similar plugin applications.

After this PR

==COMMIT_MSG==
Adding a gradle property conjure.java.jakartaPackages=true will cause the value to be set eagerly on the extension object such that it will always exist at the time the ConjurePlugin's application logic runs, and so should have the value set correctly at the time subproject dependencies are added.
==COMMIT_MSG==

Possible downsides?

It's an extra level of annoyance to have to set this e.g. via a gradle.properties file.

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• feature: A new feature of the service.
• improvement: An incremental improvement in the functionality or operation of the service.
• fix: Remedies the incorrect behaviour of a component of the service in a backwards-compatible way.
• break: Has the potential to break consumers of this service's API, inclusive of both Palantir services
  and external consumers of the service's API (e.g. customer-written software or integrations).
• deprecation: Advertises the intention to remove service functionality without any change to the
  operation of the service itself.
• manualTask: Requires the possibility of manual intervention (running a script, eyeballing configuration,
  performing database surgery, ...) at the time of upgrade for it to succeed.
• migration: A fully automatic upgrade migration task with no engineer input required.

Note: only one type should be chosen.

How are new versions calculated?

• ❗The break and manual task changelog types will result in a major release!
• 🐛 The fix changelog type will result in a minor release in most cases, and a patch release version for patch branches. This behaviour is configurable in autorelease.
• ✨ All others will result in a minor version release.

Type

• Feature
• Improvement
• Fix
• Break
• Deprecation
• Manual task
• Migration

Description

Adding a gradle property conjure.java.jakartaPackages=true will cause the value to be set eagerly on the extension object such that it will always exist at the time the ConjurePlugin's application logic runs, and so should have the value set correctly at the time subproject dependencies are added.

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• Generate changelog entry

[bjlaub]

we could potentially change this to be String jakartaPackagesProperty and just make the caller use project.findProperty - i'm not really sure which is preferred.

[carterkozak]

might as well test both