feat: persist peerstore (#3072)

Stores peer addresses in the repo datastore under the keys `/peers/*`

Author: vasco-santos

packages/ipfs/src/core/runtime/libp2p-browser.js

@@ -63,6 +63,10 @@ module.exports = () => {
     },
     metrics: {
       enabled: true
+    },
+    peerStore: {
+      persistence: true,
+      threshold: 1
     }
   }
 }

packages/ipfs/src/core/runtime/libp2p-nodejs.js

@@ -66,6 +66,9 @@ module.exports = () => {
     },
     metrics: {
       enabled: true
+    },
+    peerStore: {
+      persistence: true
     }
   }
 }