More refactors, adding wider support

prisma/schema.prisma

@@ -37,12 +37,14 @@ model IamRole {
   accountId             String
   createdAt             DateTime  @default(now())
 
+  policies IamRoleIamPolicyAttachment[]
+
   @@unique([accountId, name])
 }
 
 model IamPolicy {
   id           String
-  version      Int     @default(1)
+  version      Int      @default(1)
   isDefault    Boolean
   path         String?
   name         String
@@ -57,6 +59,15 @@ model IamPolicy {
   @@unique([accountId, path, name])
 }
 
+model IamRoleIamPolicyAttachment {
+  iamRoleId        String
+  iamPolicyId      String
+
+  role   IamRole   @relation(fields: [iamRoleId], references: [id])
+
+  @@id([iamRoleId, iamPolicyId])
+}
+
 model KmsAlias {
   name      String
   accountId String