docker-containerd: new package

docker-containerd is a daemon and API for controlling and managing runC
containers.

https://containerd.tools/

Signed-off-by: Christian Stewart <christian@paral.in>
Reviewed-by: Romain Naour <romain.naour@gmail.com>
[Thomas:
 - simplify a bit the comments about the runtime dependencies
 - add missing comment on wchar, and take into account the BR2_USE_MMU
   dependency in the comment
 - factorize the build step with a foreach loop.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
diff --git a/package/Config.in b/package/Config.in
index 711f09e..1575e55 100644
--- a/package/Config.in
+++ b/package/Config.in
@@ -1637,6 +1637,7 @@
 	source "package/cpuload/Config.in"
 	source "package/dcron/Config.in"
 	source "package/debianutils/Config.in"
+	source "package/docker-containerd/Config.in"
 	source "package/cgroupfs-mount/Config.in"
 	source "package/dsp-tools/Config.in"
 	source "package/efibootmgr/Config.in"