feat(watcher): telegram alerting and automatically persist val node

[therealdannzor]

Description

• Add Telegram support for alerting on various events
• Add automatic restart of tari_validator_node if it crashes and configuration to disable

How Has This Been Tested?

Create TG channel and populate credentials (bot token) and channel_id in the config file. Go through previous steps of starting tari_swarm_daemon and have the tari_watcher register the node.

Look at the watcher logs for the spawned process pid, or use ps aux | grep 'tari_validator_node' and look for the process with the default VN folder, and call kill -9 $PID. This induces a crash of the node and if auto_restart is enabled, the tari_watcher will start a new validator node. It will keep the state of registry since before, as long as the tari_watcher does not exit, and send registration transaction as usual.

[github-actions]

Test Results (CI)

552 tests  ±0   551 ✅  - 1   1h 56m 55s ⏱️ + 28m 49s
 58 suites ±0     0 💤 ±0 
  2 files   ±0     1 ❌ +1 

For more details on these failures, see this check.

Results for commit 5b87876. ± Comparison against base commit 23bbb44.

[sdbondi]

utACK