refactor: combine models and db crate together

crates/core/database/Cargo.toml

@@ -6,17 +6,35 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [features]
+# Databases
 mongodb = [ "dep:mongodb" ]
-default = [ "mongodb" ]
+
+# ... Other
+async-std-runtime = [ "async-std" ]
+
+# Default Features
+default = [ "mongodb", "async-std-runtime" ]
 
 [dependencies]
+# Utility
+log = "*"
+nanoid = "0.4.0"
+
 # Serialisation
 serde_json = "1"
 serde = { version = "1", features = ["derive"] }
+optional_struct = { git = "https://github.com/insertish/OptionalStruct", rev = "ee56427cee1f007839825d93d07fffd5a5e038c7" }
 
 # Database
 mongodb = { optional = true, version = "2.1.0", default-features = false }
 
 # Async Language Features
 futures = "0.3.19"
+async-trait = "0.1.51"
 async-recursion = "1.0.4"
+
+# Async
+async-std = { version = "1.8.0", features = ["attributes"], optional = true }
+
+# Authifier
+authifier = { version = "1.0", default-features = false }