feat(core/database): migrate to discriminators

Cargo.lock

@@ -2867,7 +2867,9 @@ dependencies = [
  "mongodb",
  "nanoid",
  "once_cell",
+ "rand 0.8.5",
  "redis-kiss",
+ "regex",
  "revolt-models",
  "revolt-permissions",
  "revolt-presence",
@@ -2878,6 +2880,7 @@ dependencies = [
  "serde",
  "serde_json",
  "ulid 1.0.0",
+ "unicode-segmentation",
 ]
 
 [[package]]
@@ -4327,6 +4330,12 @@ dependencies = [
  "tinyvec",
 ]
 
+[[package]]
+name = "unicode-segmentation"
+version = "1.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1dd624098567895118886609431a7c3b8f516e41d30e0643f03d94592a147e36"
+
 [[package]]
 name = "unicode-xid"
 version = "0.0.4"