feat(newt): add newt stack

compose/newt/.env.example

@@ -0,0 +1,3 @@
+PANGOLIN_ENDPOINT="https://pangolin.your.domain"
+NEWT_ID="##########"
+NEWT_SECRET="#######################"

compose/newt/docker-compose.yml

@@ -0,0 +1,10 @@
+services:
+  newt:
+    image: fosrl/newt
+    container_name: newt
+    restart: unless-stopped
+    environment:
+      PANGOLIN_ENDPOINT: "${PANGOLIN_ENDPOINT:?}"
+      NEWT_ID: "${NEWT_ID:?}"
+      NEWT_SECRET: "${NEWT_SECRET:?}"
+    network_mode: host