HTTP probing: support /tls/http multiaddrs

[lidel]

According to libp2p specs both /https and /tls/http are valid multiaddr for HTTPS providers (libp2p specs), but spark only tests /https:

spark-checker/test/multiaddr.test.js

Lines 5 to 23 in 799cc5e

	const HAPPY_CASES = [
	['/ip4/127.0.0.1/tcp/80/http', 'http://127.0.0.1'],
	['/ip4/127.0.0.1/tcp/8080/http', 'http://127.0.0.1:8080'],
	['/ip4/127.0.0.1/tcp/443/https', 'https://127.0.0.1'],
	['/ip4/127.0.0.1/tcp/8080/https', 'https://127.0.0.1:8080'],
	['/dns/meridian.space/tcp/8080/http', 'http://meridian.space:8080'],
	['/dns4/meridian.space/tcp/8080/http', 'http://meridian.space:8080'],
	['/dns6/meridian.space/tcp/8080/http', 'http://meridian.space:8080'],
	[
	'/dns/meridian.space/https/http-path/%2Fipni-provider%2FproviderID',
	'https://meridian.space/ipni-provider/providerID',
	],
	['/dns/meridian.space/https/http-path/', 'https://meridian.space'],
	['/dns/meridian.space/https/http-path', 'https://meridian.space'],
	['/dns/meridian.space/https', 'https://meridian.space'],
	['/dns/meridian.space/http', 'http://meridian.space'],
	['/ip4/127.0.0.1/http', 'http://127.0.0.1'],
	['/ip4/127.0.0.1/https', 'https://127.0.0.1'],
	]

References

• https://github.com/libp2p/specs/tree/master/http#http-transport

cc ipshipyard/roadmaps#9