feat: add MSSQL UUID transformation and update migration process for channel handling

cmd/go_migrate/mssql-transform.go

@@ -0,0 +1,14 @@
+package main
+
+func mssqlUuidToBigEndian(mssqlUuid []byte) []byte {
+	if len(mssqlUuid) != 16 {
+		return mssqlUuid
+	}
+	pgUuid := make([]byte, 16)
+	pgUuid[0], pgUuid[1], pgUuid[2], pgUuid[3] = mssqlUuid[3], mssqlUuid[2], mssqlUuid[1], mssqlUuid[0]
+	pgUuid[4], pgUuid[5] = mssqlUuid[5], mssqlUuid[4]
+	pgUuid[6], pgUuid[7] = mssqlUuid[7], mssqlUuid[6]
+	copy(pgUuid[8:], mssqlUuid[8:])
+
+	return pgUuid
+}