Add drone primitive contracts

[1020559180]

Summary

Add a drone primitive contract area to the framework so drone packages
(e.g. a DJI MSDK flight driver) can declare standard flight / mission
primitives instead of shipping SDK-specific contracts.

Contracts added

Namespace robonix/primitive/drone/* — kind = primitive, mode = rpc:

capability	idl	purpose
driver	lifecycle/srv/Driver.srv	lifecycle bootstrap (CMD_INIT)
takeoff	drone/srv/Takeoff.srv	take off and hover at altitude (m)
land	drone/srv/Land.srv	land
hover	drone/srv/Hover.srv	hover in place
rth	drone/srv/Rth.srv	return to home
state	drone/srv/State.srv	flight status (mission_state / operation_mode / altitude / sdk_registered / …)
invoke	drone/srv/Invoke.srv	generic passthrough to the flight controller
list_capabilities	drone/srv/ListCapabilities.srv	dynamic capability discovery

• 8 contract TOMLs under capabilities/primitive/drone/ (Schema A:
  [contract] id/version/kind/idl/description + [mode] type=rpc).
• 7 SRV files under capabilities/lib/drone/srv/; responses use
  std_msgs/String status.
• Removes a stale drone.proto placeholder that was previously in
  capabilities/primitive/drone/.

Note

Contract layer only. The DJI MSDK driver implementation lives in a separate
package repo (robonix.primitive.dji.msdk.flight) and will be registered in
the package catalog after this merges.

[enkerewpo]

https://github.com/syswonder/robonix/actions/runs/35055362607/job/104667256785?pr=252

please use English inside robonix code repo.

thanks for adding drone primitives!

[enkerewpo]

what's this "APK"?