feat(server): sql-tools support for class level composite fk (#19242)

* feat: support for class level composite fk

* chore: clean up

---------

Co-authored-by: Jason Rasmussen <jason@rasm.me>

server/test/sql-tools/foreign-key-constraint-missing-reference-table.stub.ts

@@ -0,0 +1,44 @@
+import { Column, DatabaseSchema, ForeignKeyConstraint, Table } from 'src/sql-tools';
+
+class Foo {}
+
+@Table()
+@ForeignKeyConstraint({
+  columns: ['parentId'],
+  referenceTable: () => Foo,
+})
+export class Table1 {
+  @Column()
+  parentId!: string;
+}
+
+export const description = 'should warn against missing reference table';
+export const schema: DatabaseSchema = {
+  name: 'postgres',
+  schemaName: 'public',
+  functions: [],
+  enums: [],
+  extensions: [],
+  parameters: [],
+  tables: [
+    {
+      name: 'table1',
+      columns: [
+        {
+          name: 'parentId',
+          tableName: 'table1',
+          type: 'character varying',
+          nullable: false,
+          isArray: false,
+          primary: false,
+          synchronize: true,
+        },
+      ],
+      indexes: [],
+      triggers: [],
+      constraints: [],
+      synchronize: true,
+    },
+  ],
+  warnings: ['[@ForeignKeyConstraint.referenceTable] Unable to find table (Foo)'],
+};