Added multiple chains, continued working on better state (beta) handl…

…ing and Notion export diff

data/chains/V2/cardano/meta.ts

@@ -0,0 +1,28 @@
+import { Chain } from '../../../../types/chain.types';
+
+const meta: Chain = {
+  id: 'cardano',
+  graph_id: null,
+  name: 'Cardano',
+  alt_names: [],
+  standard: 'cardano',
+  block_type: {
+    label: 'sf.ethereum.type.v2.Block',
+    url: 'https://buf.build/streamingfast/firehose-ethereum/docs/main:sf.ethereum.type.v2',
+  },
+  icon: {
+    id: 'networks/cardano',
+    brand_theme: 'both',
+    variants: ['branded', 'mono'],
+  },
+  supported_services: {
+    rpc: 'unreleased',
+    firehose: 'unreleased',
+    substreams: 'unreleased',
+  },
+  metadata: {
+    website: 'https://cardano.org/',
+  },
+};
+
+export default meta;