Add sample configuration file

Signed-off-by: Jacob Kiers <code@kiers.eu>

config.yaml.example

@@ -0,0 +1,16 @@
+version: 1
+log: debug
+
+servers:
+  example_server:
+    listen:
+      - "0.0.0.0:8443"
+    tls: true # Enable TLS features like SNI filtering
+    sni:
+      api.example.org: example-api
+      www.example.org: gh-proxy
+    default: ban
+
+upstream:
+  proxy: "tcp://new-www.example.org:443" # Connect over IPv4 or IPv6 to new-www.example.org:443
+  example-api: "tcp6://api-v1.example.com:443" # Connect over IPv6 to api-v1.example.com:443