List PeerID and AgentVersion in brave://ipfs

[bbondy]

Per Lidel, it would be useful to list the PeerID and AgentVersion from the API.
https://docs.ipfs.io/reference/http/api/#api-v0-id

PeerID is ID from there

[stephendonner]

Verified FIXED using

Brave	1.21.51 Chromium: 88.0.4324.152 (Official Build) beta (x86_64)
Revision	6579930fc53b4dc589c042bec9d0a3778326974d-refs/branch-heads/4324@{#2106}
OS	macOS Version 11.2.1 (Build 20D74)

Steps to verify:

1. Loaded ipfs://bafybeiemxf5abjwjbikoz4mc3a3dla6ual3jsgpdr4cjr3oz3evfyavhwq/wiki/Vincent_van_Gogh.html to trigger IPFS-support detection
2. Clicked "Enable IPFS" as instructed
3. Loaded brave://ipfs
4. Verified that both PeerID and Version were present, with sane values, under "Node info"

---

Verification passed on

Brave	1.21.52 Chromium: 88.0.4324.152 (Official Build) dev (64-bit)
Revision	6579930fc53b4dc589c042bec9d0a3778326974d-refs/branch-heads/4324@{#2106}
OS	Ubuntu 18.04 LTS

Verified the above test plan
Verified that both PeerID and Version were present, with sane values, under "Node info"

---

Verification passed on

Brave | 1.21.56 Chromium: 88.0.4324.152 (Official Build) dev (64-bit)
-- | --
Revision | 6579930fc53b4dc589c042bec9d0a3778326974d-refs/branch-heads/4324@{#2106}
OS | Windows 10 OS Version 2004 (Build 19041.804)

Verified the above test plan
Verified that both PeerID and Version were present, with sane values, under "Node info"