Initial support for rockchip boards (#8382)

* initial support for rockchip boards

* Apply suggestions from code review

apply requested changes

Co-authored-by: Nicolas Mowen <nickmowen213@gmail.com>

* requested changes

* rewrite dockerfile

* adjust targets

* Update .github/workflows/ci.yml

Co-authored-by: Nicolas Mowen <nickmowen213@gmail.com>

* Update docs/docs/configuration/object_detectors.md

Co-authored-by: Nicolas Mowen <nickmowen213@gmail.com>

* Update docs/docs/configuration/object_detectors.md

Co-authored-by: Nicolas Mowen <nickmowen213@gmail.com>

* add information to docs

* Update docs/docs/configuration/object_detectors.md

Co-authored-by: Nicolas Mowen <nickmowen213@gmail.com>

* format rknn.py

* apply changes from isort and ruff

---------

Co-authored-by: MarcA711 <>
Co-authored-by: Nicolas Mowen <nickmowen213@gmail.com>

docker/rockchip/rk.hcl

@@ -0,0 +1,34 @@
+target wget {
+  dockerfile = "docker/main/Dockerfile"
+  platforms = ["linux/arm64"]
+  target = "wget"
+}
+
+target wheels {
+  dockerfile = "docker/main/Dockerfile"
+  platforms = ["linux/arm64"]
+  target = "wheels"
+}
+
+target deps {
+  dockerfile = "docker/main/Dockerfile"
+  platforms = ["linux/arm64"]
+  target = "deps"
+}
+
+target rootfs {
+  dockerfile = "docker/main/Dockerfile"
+  platforms = ["linux/arm64"]
+  target = "rootfs"
+}
+
+target rk {
+  dockerfile = "docker/rockchip/Dockerfile"
+  contexts = {
+    wget = "target:wget",
+    wheels = "target:wheels",
+    deps = "target:deps",
+    rootfs = "target:rootfs"
+  }
+  platforms = ["linux/arm64"]
+}