feat: adding lotus_engine crate to the "engines" section (#616)

Author: zenialexandre

content/ecosystem/data.toml

@@ -789,6 +789,12 @@ name = "liquidfun"
 source = "crates"
 categories = ["physics"]
 
+[[items]]
+name = "lotus_engine"
+source = "crates"
+repository_url = "https://github.com/zenialexandre/lotus"
+categories = ["engines"]
+
 [[items]]
 name = "luajit"
 source = "crates"