Restructure database config (#1700)

config-example.yaml

@@ -138,24 +138,25 @@ ephemeral_node_inactivity_timeout: 30m
 # In case of doubts, do not touch the default 10s.
 node_update_check_interval: 10s
 
-# SQLite config
-db_type: sqlite3
+database:
+  type: sqlite
 
-# For production:
-db_path: /var/lib/headscale/db.sqlite
+  # SQLite config
+  sqlite:
+    path: /var/lib/headscale/db.sqlite
 
-# # Postgres config
-# If using a Unix socket to connect to Postgres, set the socket path in the 'host' field and leave 'port' blank.
-# db_type: postgres
-# db_host: localhost
-# db_port: 5432
-# db_name: headscale
-# db_user: foo
-# db_pass: bar
+  # # Postgres config
+  # postgres:
+  #   # If using a Unix socket to connect to Postgres, set the socket path in the 'host' field and leave 'port' blank.
+  #   host: localhost
+  #   port: 5432
+  #   name: headscale
+  #   user: foo
+  #   pass: bar
 
-# If other 'sslmode' is required instead of 'require(true)' and 'disabled(false)', set the 'sslmode' you need
-# in the 'db_ssl' field. Refers to https://www.postgresql.org/docs/current/libpq-ssl.html Table 34.1.
-# db_ssl: false
+  #   # If other 'sslmode' is required instead of 'require(true)' and 'disabled(false)', set the 'sslmode' you need
+  #   # in the 'db_ssl' field. Refers to https://www.postgresql.org/docs/current/libpq-ssl.html Table 34.1.
+  #   ssl: false
 
 ### TLS configuration
 #