Add quick search function for mobile

[oskarth]

Problem

Using Status chat day-to-day, to exchange essential information not documented elsewhere, searching chats becomes more desireable. To objective of search being to read, quote, reply to or copy historic messages.

• As a user I want to find specific messages from the past
• As a user I want to search for specific messages by topic
• As a user I want to search for specific messages by user
• As a user I want to search for specific messages by accross public, private and group chats

Original> Can't find my channels or messages.

Implementation

Implement quick search similar to on Desktop.

Acceptance Criteria

I can search for channels easily on Mobile.

Notes

This already exists on Desktop, so should be able to re-use at least logic. @yenda can probably advice.

This would make a great bounty as well for the chat-team to issue (cc @yenda @rachelhamlin).

Future Steps

[oskarth]

See #6252

I added the bounty labels but it's unlikely I'll review the code, so I defer to @yenda et al for how to deal with it a la https://discuss.status.im/t/bounties-bounties-for-everyone/784

[errorists]

Designs for mobile are available here, though they go a step further than search on desktop allowing to search message history in addition to filtering chats/contacts. Figma link

[StatusSceptre]

What's the current state of this @oskarth, is this bounty considered a Medium bounty still with the updates from @errorists ?

[rachelhamlin]

@StatusSceptre actually, @yenda is going to work on this this week. I'm removing the bounty labels for now.

[hesterbruikman]

#7511
@yenda can we close this issue as you're working on it in #7511?

[cammellos]

This should be implemented, at least the channels part.