Add a table with GO libraries to "IPFS in GO" page

[lidel]

After #1185 lands, we will have "IPFS in GO" page (same content as https://docs.ipfs.io/reference/go/api/).

I think it is a good place to point people at all the Go libraries available.

We already had prior art content in Kubo README (copy below). Moving it to docs is a good idea.

Packages

This table is generated using the module package-table with package-table --data=package-list.json.
Listing of the main packages used in the IPFS ecosystem. There are also three specifications worth linking here:

Name	CI/Travis	Coverage	Description
Libp2p
go-libp2p			p2p networking library
go-libp2p-pubsub			pubsub built on libp2p
go-libp2p-kad-dht			dht-backed router
go-libp2p-pubsub-router			pubsub-backed router
Multiformats
go-cid			CID implementation
go-multiaddr			multiaddr implementation
go-multihash			multihash implementation
go-multibase			mulitbase implementation
Files
go-unixfs			the core 'filesystem' logic
go-mfs			a mutable filesystem editor for unixfs
go-ipfs-posinfo			helper datatypes for the filestore
go-ipfs-chunker			file chunkers
Exchange
go-ipfs-exchange-interface			exchange service interface
go-ipfs-exchange-offline			(dummy) offline implementation of the exchange service
go-bitswap			bitswap protocol implementation
go-blockservice			service that plugs a blockstore and an exchange together
Datastores
go-datastore			datastore interfaces, adapters, and basic implementations
go-ipfs-ds-help			datastore utility functions
go-ds-flatfs			a filesystem-based datastore
go-ds-measure			a metric-collecting database adapter
go-ds-leveldb			a leveldb based datastore
go-ds-badger			a badgerdb based datastore
Namesys
go-ipns			IPNS datastructures and validation logic
Repo
go-fs-lock			lockfile management functions
fs-repo-migrations			repo migrations
IPLD
go-block-format			block interfaces and implementations
go-ipfs-blockstore			blockstore interfaces and implementations
go-ipld-format			IPLD interfaces
go-ipld-cbor			IPLD-CBOR implementation
go-ipld-git			IPLD-Git implementation
go-merkledag			IPLD-Merkledag implementation (and then some)
Commands
go-ipfs-cmds			CLI & HTTP commands library
go-ipfs-files			CLI & HTTP commands library
go-ipfs-api			an old, stable shell for the IPFS HTTP API
go-ipfs-http-client			a new, unstable shell for the IPFS HTTP API
interface-go-ipfs-core			core go-ipfs API interface definitions
Metrics & Logging
go-metrics-interface			metrics collection interfaces
go-metrics-prometheus			prometheus-backed metrics collector
go-log			logging framework
Generics/Utils
go-ipfs-routing			routing (content, peer, value) helpers
go-ipfs-util			the kitchen sink
go-ipfs-addr			utility functions for parsing IPFS multiaddrs

For brevity, we've omitted most go-libp2p, go-ipld, and go-multiformats packages. These package tables can be found in their respective project's READMEs:

• go-libp2p
• go-ipld