Unfurl Status deep links

[igor-sirotin]

Problem

New URL unfurling scheme was implemented in #3471.
We should also unfurl status deep links on sender side and include a preview in the message.

UnfurlURLs should follow this flow for Status deep links:

1. If the URL contains data, decode it first
   I'm not sure if this step makes sense, because we plan to unfurl it in step 2.
   At the same time, the receiver will update the preview on reception anyway. so maybe this step is important and step 2 is redundant.
2. Request the profile/community info directly from waku
   • RequestContactInfoFromMailserver for profile
   • RequestCommunityInfoFromMailserver for community
   • Take a think about channels, as it might contain sensitive data that the sender has access to and the receiver doesn't.
     There should be no more info than a Status deep link with data would contain.

Acceptance Criteria

UnfurlURLs should unfurl Status deep links for:

• Profile
• Communiy
• Community channel

Future Steps

Support the solution in desktop/mobile.

[igor-sirotin]

Problem

Current LinkPreview doesn't allow to fit all URLDataResponse properties, It obviously much smaller than we need.
Moreover, shared URLs doesn't contain contact/community thumbnails, but LinkPreview is ready to take one. We could take this opportunity and put that info to the LinkPreview as well.

LinkPreview

status-go/protocol/common/message.go

Lines 96 to 103 in 09a9886

	type LinkPreview struct {
	Type protobuf.UnfurledLink_LinkType `json:"type"`
	URL string `json:"url"`
	Hostname string `json:"hostname"`
	Title string `json:"title,omitempty"`
	Description string `json:"description,omitempty"`
	Thumbnail LinkPreviewThumbnail `json:"thumbnail,omitempty"`
	}

URLDataResponse

status-go/protocol/messenger_share_urls.go

Lines 43 to 47 in 09a9886

	type URLDataResponse struct {
	Community CommunityURLData `json:"community"`
	Channel CommunityChannelURLData `json:"channel"`
	Contact ContactURLData `json:"contact"`
	}

status-go/protocol/messenger_share_urls.go

Lines 20 to 42 in 09a9886

	type CommunityURLData struct {
	DisplayName string `json:"displayName"`
	Description string `json:"description"`
	MembersCount uint32 `json:"membersCount"`
	Color string `json:"color"`
	TagIndices []uint32 `json:"tagIndices"`
	CommunityID string `json:"communityId"`
	}
	type CommunityChannelURLData struct {
	Emoji string `json:"emoji"`
	DisplayName string `json:"displayName"`
	Description string `json:"description"`
	Color string `json:"color"`
	ChannelUUID string `json:"channelUuid"`
	}
	type ContactURLData struct {
	DisplayName string `json:"displayName"`
	Description string `json:"description"`
	PublicKey string `json:"publicKey"`
	}