iNat profile autoadd subcommand

[synrg]

The [p]inat profile autoadd subcommand (moderator or "Manage profiles" role) will watch the channel from which it is invoked for messages containing a profile link and:

• if the user posting the link is not yet known to the bot, automatically add the user and
  • show a reaction button to allow them to remove it
  • also show a message advising them how to remove or update it with subcommands for those operations

[p]inat profile autoadd start [report_to]
[p]inat profile autoadd stop

• Where [report_to], if specified, optionally reports each add to the specified channel.
  • If this needs to be changed, stop and then start again with that parameter specified, or else see additional ideas below.

e.g. on #introductions channel, a moderator types:

[p]inat profile autoadd start #inat-profiles

Furthermore, if autoadd with a report is in effect, then any adds, updates or removals (whether or not they were done in-channel) will be reported to the named channel.

Additional ideas for reporting (perhaps deserves a separate issue):

As moderator (or "Manage profiles" role):

[p]inat profile autoreport start [report_to] [subcommands]
[p]inat profile autoreport stop [report_to] [subcommands]

The idea is to allow reporting to be enabled/disabled independently of autoadd reporting. If [subcommands] are specified, specific subcommands to start or stop reporting can be monitored (allowable values add, update, remove).

[synrg]

Look into using standard Redbot permissions cog for role-based permissions (i.e. no custom code needed?) I worry that any sufficiently general role names like "Manage profiles" may collide with use of such roles by other cogs/bots, so each server should be able to manage those roles & name them however they see fit, e.g. "Manage eBird profiles" as distinct from "Manage iNat profiles", etc.

[synrg]

It's better to have moderator interaction whenever someone is added.