Feat: read min liq version from yaml

src/settings.liq

@@ -96,12 +96,13 @@ def get_setting(default_value, config_prop, env_var) =
 end
 
 # VERSION CHECK
-liq_min_version = list.assoc(default="2.1", "liquidsoap_min_version", ini)
 if
-  not liquidsoap.version.at_least(liq_min_version)
+  not liquidsoap.version.at_least(config.general.liquidsoap_min_version)
 then
   print(
-    "AURA Engine Core requires at least Liquidsoap v#{liq_min_version}"
+    "AURA Engine Core requires at least Liquidsoap v#{
+      config.general.liquidsoap_min_version
+    }"
   )
   exit(1)
 end