Add watch command to inspect DBs continiously

[Aherontas]

Something similar to: watch -n 5 psql -h localhost -U DB_USER -c "SELECT * FROM DB_TEST;" DB_TESTING.

In order to see changes in DB continuously via peepdb cli.

[Aherontas]

The watch command could get the input timing dynamically. For now I have been testing it via bash script and expect:

`#!/usr/bin/expect -f

Set a timeout for each expect command

set timeout 5 # WE MUST FETCH THAT DYNAMICALLY

Infinite loop to execute the command every 2 seconds

while {1} {
spawn peepdb view test --page 40
expect {
"Please entry the password to encrpyt/decrpty DB passwords:" { send "test\r" }
timeout { puts "Password prompt not received"; continue }
}
expect eof
sleep 60
}`

[Aherontas]

A note is that watch in Unix simply re-runs a command every n seconds. However, it’s not particularly customizable in Python and also doesn't “follow” changes in the sense of keeping track of what was already displayed, so we would not go with that approach.