thermal-service: Implement runnable service traits

[kurtjd]

This PR implements the recently introduced odp_common::runnable_service traits for the thermal service.

However, this required a little bit of refactoring and rethinking. There was some initial difficulty in making this work for the thermal service as-is due to the fact that we don't know upfront how many sensors and fans will be instantiated by the user, making the ServiceRunner trait tricky.

Speaking with @williampMSFT, he pointed out that the thermal-service itself is not really a runnable service, but it's better to think of each sensor and fan as a standalone runnable service which is a good idea. Thus, I implement the traits for sensor and fans instead (with the thermal-service struct acting as a coordination and relay handler).

However, this still does point out some other little things I want to revisit and refactor. The plan is to move away from IPCs which I currently make use of with the Device struct as an intermediary between the thermal-service handler and individual sensor and fan service handlers. Also want to revisit how I can potentially remove the need for the fan service to need a thermal service handler to just talk to a sensor. This will require a bit more thought and I think I'll try to address some of this in the follow-up refactor where we start separating the interface from the implementation (see: #748).

This serves as a good start to unblock us and keep moving.

[Copilot]

Pull request overview

This PR migrates thermal-service to the new odp_service_common::runnable_service model by making each fan and sensor independently spawnable/runnable, while keeping the top-level thermal service as a coordinating handle for IPC/event routing.

Changes:

• Remove the old task module entrypoints and replace them with runnable_service::Service + ServiceRunner implementations for fan and sensor.
• Update the examples/std thermal example to spawn fan/sensor services via spawn_service!.
• Add odp-service-common as a dependency where needed and update lockfiles.

Reviewed changes

Copilot reviewed 6 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
thermal-service/src/task.rs	Deletes legacy fan/sensor task helpers now superseded by runnable service runners.
thermal-service/src/lib.rs	Removes pub mod task; export consistent with task module deletion.
thermal-service/src/sensor.rs	Adds runnable-service Resources, Service, Runner, and init params for sensors.
thermal-service/src/fan.rs	Adds runnable-service Resources, Service, Runner, and init params for fans.
thermal-service/Cargo.toml	Adds dependency on odp-service-common.
examples/std/src/bin/thermal.rs	Updates example to spawn fan/sensor services via odp_service_common::spawn_service!.
examples/std/Cargo.toml	Adds odp-service-common dependency for the std example.
examples/std/Cargo.lock	Records the new odp-service-common dependency in the example lockfile.
Cargo.lock	Records odp-service-common in the workspace lockfile due to the new thermal-service dependency.

[williampMSFT]