The build `0.4.0-build182` upgrades
`kotlinx-collections-immutable` library
(which is used by the compose runtime) to 0.3.4,
which was published to maven central,
so most usages of sunsetting jcenter repo
can be removed now.

Resolves #557

* Refactor Application for observable properties

* Style

* Add RememberObserver

* Comment out problematic update

The verb `update` in `__UPDATE_COMPOSE_VERSION_MARKER__`
could be read as an instruction to update the plugin,
which might be confusing for users.
I suggest renaming the marker to more neutral
`__LATEST_COMPOSE_RELEASE_VERSION__`

* Add IDE resolution warning for examples sharing JVM & Android code.

* Use Ktor to remove JVM-specific networking code from common source set
Fix resolution for Picture class via expect/actual mechanism

Co-authored-by: Sebastian Aigner <sebastian.aigner@jetbrains.com>

Co-authored-by: Sebastian Aigner <sebastian.aigner@jetbrains.com>

This change removes `org.jetbrains.compose.desktop.application` plugin id
in favor of doing everything in `org.jetbrains.compose`.
The change simplifies configuring Compose Desktop projects.
Now, just one plugin dependency is needed.

To avoid task name conflicts with common task names such as `package` and `run`,
the plugin creates tasks lazily only if `application` block/property is used in a script.