refactor: add core modules to libp2p (#400)

* refactor: add js-libp2p-connection-manager to repo

Co-authored-by: David Dias <daviddias.p@gmail.com>
Co-authored-by: Jacob Heun <jacobheun@gmail.com>
Co-authored-by: Pedro Teixeira <i@pgte.me>
Co-authored-by: Vasco Santos <vasco.santos@ua.pt>

* test(conn-mgr): only run in node

* refactor: add js-libp2p-identify to repo

Co-authored-by: David Dias <daviddias.p@gmail.com>
Co-authored-by: Friedel Ziegelmayer <dignifiedquire@gmail.com>
Co-authored-by: Hugo Dias <hugomrdias@gmail.com>
Co-authored-by: Jacob Heun <jacobheun@gmail.com>
Co-authored-by: Maciej Krüger <mkg20001@gmail.com>
Co-authored-by: Richard Littauer <richard.littauer@gmail.com>
Co-authored-by: Vasco Santos <vasco.santos@moxy.studio>
Co-authored-by: Yusef Napora <yusef@protocol.ai>
Co-authored-by: ᴠɪᴄᴛᴏʀ ʙᴊᴇʟᴋʜᴏʟᴍ <victorbjelkholm@gmail.com>

* refactor: add libp2p-pnet to repo

Co-authored-by: Jacob Heun <jacobheun@gmail.com>
Co-authored-by: Vasco Santos <vasco.santos@moxy.studio>

* refactor: add libp2p-ping to repo

Co-authored-by: David Dias <daviddias.p@gmail.com>
Co-authored-by: Francisco Baio Dias <xicombd@gmail.com>
Co-authored-by: Friedel Ziegelmayer <dignifiedquire@gmail.com>
Co-authored-by: Hugo Dias <mail@hugodias.me>
Co-authored-by: Jacob Heun <jacobheun@gmail.com>
Co-authored-by: João Antunes <j.goncalo.antunes@gmail.com>
Co-authored-by: Richard Littauer <richard.littauer@gmail.com>
Co-authored-by: Vasco Santos <vasco.santos@moxy.studio>
Co-authored-by: Vasco Santos <vasco.santos@ua.pt>
Co-authored-by: ᴠɪᴄᴛᴏʀ ʙᴊᴇʟᴋʜᴏʟᴍ <victorbjelkholm@gmail.com>

* refactor: add libp2p-circuit to repo

Co-authored-by: David Dias <daviddias.p@gmail.com>
Co-authored-by: Dmitriy Ryajov <dryajov@gmail.com>
Co-authored-by: Friedel Ziegelmayer <dignifiedquire@gmail.com>
Co-authored-by: Hugo Dias <mail@hugodias.me>
Co-authored-by: Jacob Heun <jacobheun@gmail.com>
Co-authored-by: Maciej Krüger <mkg20001@gmail.com>
Co-authored-by: Oli Evans <oli@tableflip.io>
Co-authored-by: Pedro Teixeira <i@pgte.me>
Co-authored-by: Vasco Santos <vasco.santos@ua.pt>
Co-authored-by: Victor Bjelkholm <victorbjelkholm@gmail.com>
Co-authored-by: Yusef Napora <yusef@napora.org>
Co-authored-by: dirkmc <dirk@mccormick.cx>

* test(switch): avoid using instanceof

* chore(switch): update bignumber dep

* refactor(circuit): clean up tests

* refactor(switch): consolidate get peer utils

* test(identify): do deep checks of addresses

* test(identify): bump timeout for identify test

* test(switch): tidy up limit dialer test

* refactor(switch): remove redundant circuit tests

* chore: add coverage script

* refactor(circuit): consolidate get peer info

* docs: reference original repositories in each sub readme

* docs: fix comment

* refactor: clean up sub package.json files and readmes

examples/pnet-ipfs/libp2p-bundle.js

@@ -0,0 +1,60 @@
+'use strict'
+
+const Libp2p = require('libp2p')
+const TCP = require('libp2p-tcp')
+const MPLEX = require('libp2p-mplex')
+const SECIO = require('libp2p-secio')
+const fs = require('fs')
+const Protector = require('libp2p-pnet')
+
+/**
+ * Options for the libp2p bundle
+ * @typedef {Object} libp2pBundle~options
+ * @property {PeerInfo} peerInfo - The PeerInfo of the IPFS node
+ * @property {PeerBook} peerBook - The PeerBook of the IPFS node
+ * @property {Object} config - The config of the IPFS node
+ * @property {Object} options - The options given to the IPFS node
+ */
+
+/**
+ * privateLibp2pBundle returns a libp2p bundle function that will use the swarm
+ * key at the given `swarmKeyPath` to create the Protector
+ *
+ * @param {string} swarmKeyPath The path to our swarm key
+ * @returns {libp2pBundle} Returns a libp2pBundle function for use in IPFS creation
+ */
+const privateLibp2pBundle = (swarmKeyPath) => {
+  /**
+   * This is the bundle we will use to create our fully customized libp2p bundle.
+   *
+   * @param {libp2pBundle~options} opts The options to use when generating the libp2p node
+   * @returns {Libp2p} Our new libp2p node
+   */
+  const libp2pBundle = (opts) => {
+    // Set convenience variables to clearly showcase some of the useful things that are available
+    const peerInfo = opts.peerInfo
+    const peerBook = opts.peerBook
+
+    // Build and return our libp2p node
+    return new Libp2p({
+      peerInfo,
+      peerBook,
+      modules: {
+        transport: [TCP], // We're only using the TCP transport for this example
+        streamMuxer: [MPLEX], // We're only using mplex muxing
+        // Let's make sure to use identifying crypto in our pnet since the protector doesn't
+        // care about node identity, and only the presence of private keys
+        connEncryption: [SECIO],
+        // Leave peer discovery empty, we don't want to find peers. We could omit the property, but it's
+        // being left in for explicit readability.
+        // We should explicitly dial pnet peers, or use a custom discovery service for finding nodes in our pnet
+        peerDiscovery: [],
+        connProtector: new Protector(fs.readFileSync(swarmKeyPath))
+      }
+    })
+  }
+
+  return libp2pBundle
+}
+
+module.exports = privateLibp2pBundle