DCAD: add dcad user and group

dcader user and group are created for DCA Daemon (DCAD).
DCAD provides supports for face-ml SWA.

The UID/GID is chosen by running: ./display-accts.py --show-free

Change-Id: I9025f95645b48af4642508d61b4362efcfaecea0
Bug: b/261911310
Test: emerge-zork chromeos-base/face-cli
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/eclass-overlay/+/4091088
Tested-by: Yiping Chen <yipingchen@chromium.org>
Reviewed-by: Leo Zhang <googleo@google.com>
Reviewed-by: Allen Webb <allenwebb@google.com>
Commit-Queue: Leo Zhang <googleo@google.com>
Reviewed-by: Ben Kersten <bkersten@google.com>
Reviewed-by: Betul Soysal <betuls@google.com>
Commit-Queue: Yiping Chen <yipingchen@chromium.org>
diff --git a/profiles/base/accounts/group/dcader b/profiles/base/accounts/group/dcader
new file mode 100644
index 0000000..fe5349c
--- /dev/null
+++ b/profiles/base/accounts/group/dcader
@@ -0,0 +1,3 @@
+group:dcader
+gid:20202
+users:dcader
diff --git a/profiles/base/accounts/user/dcader b/profiles/base/accounts/user/dcader
new file mode 100644
index 0000000..5a90040
--- /dev/null
+++ b/profiles/base/accounts/user/dcader
@@ -0,0 +1,6 @@
+user:dcader
+uid:20202
+gid:20202
+gecos:data collection app daemon
+home:/dev/null
+shell:/bin/false