Add telegram bot functionalities

[pablomendezroyo]

Is your feature request related to a problem? Please describe. Currently the telegram bot has been coded for a first setup: set telegram token and add/remove the channel ID. The telegram bot has a huge range of possibilities where it can be useful.

Describe the solution you'd like More functionalities to consider may be:

• New updates notifications. Subscribe to that notification and send a message.
• New geth synced notification. Subscribe to that notification and send a message when geth gets synced.
• Disk/cpu/memory stats as a new command/s.

Describe alternatives you've considered

Additional context

[pablomendezroyo]

Last devs meeting on 24th december, we discuss new features to be added to the bot:

• Show geth status: synced vs not synced.
• Show new updates notifications.

There are some tecnical aspects to take into account:

• To check updates and emit them as notification propertly, there is a previous step/issue to implement with mid-high complexity: currently, versions are used in different parts of the dappmanager, the best option would be to emit a new eventBus type with the versions updated and subscribe to this where needed.
• The geth sync status
  • sync status may switch every little time, we should not spam users with notifications every single time geth change the status.
  • Show the syncing progress in geth takes complexity since is not completely accurate.
  • Should we show status for the other blockchain packages? (monero, prysm, bitcoin)
  • It is much more accurate to get the syncing progress in ETH2 than in ETH1.