Adding upgrade file watcher for cosmovisor.
Currently the comswisor upgrade mechanism relays on parsing log messages. This is not reliable:
+ depends on the log level output (x/upgrade uses INFO)
+ can be hacked by accidentally logging user user content
+ can be broken by using upgrade name which will break the regex pattern.
closes: #7703closes: #8523closes: #8651closes: #8793closes: #8964
**Depends on**:
- #9652
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