Remove kicked members or those who left from mentions suggestions

[tomastiminskas]

Filter members that left or were kicked from a tribe from mentions suggestion list.

Base branch: develop: project needs to be compiled and run from develop branch where the latest changes are pushed.

Context

• When typing a message on a tribe and entering @ character followed by a letter, a list of members to tag will show up
• That list is built processing messages in the tribe and getting aliases from them, removing duplicates and old messages.
• We want to remove members that were kicked out or who left the tribe from the members suggestions list
• This logic is implemented in ChatViewModel.kt in processMemberMention method

Requirements

• Implement logic to filter members from whom the last message is of type 15 or 16 (case groupLeave = 15, case groupKick = 16)
• If a message with a type different than 15 or 16 was sent after a msg of type 15 or 16, then it must be included since it means the member re joined after being kicked or left
• As messages are iterated in reverse (which means the latest will go first) we need to check if message.type == 15 or message.type == 16 and matchingMessages doesn't contain a message with the same senderAlias than the message in the curren iteration then add it to a new list of excluded members
• This new excluded members list should be used to avoid members to be included in matchingMessages in next iteration if they are present in the excluded members list

Acceptance Criteria

• Prevent old members that were kicked or left the tribe to show up in the mentions suggestions

[onyedikachi-david]

@tomastiminskas , Please intimate me on how the bounty works, and can i get assigned?

[tomastiminskas]

@onyedikachi-david to get assigned you first need to have an account on Sphinx app and signup on https://community.sphinx.chat/ using your sphinx account

[Crypto4udit]

@tomastiminskas , Would you please assign this to me?

[AnonKotlinDev]

@tomastiminskas you can assign it to me