set database maximum number of connections and maximum idle time

[lifang218c]

Is your feature request related to a problem? Please describe.
#2241
类似这个需求

Describe the solution you'd like
I hope that after the database connection is successful, it can support setting the maximum number of connections and maximum idle time

Describe alternatives you've considered
i hope it

[gnana997]

Hi @kevwan , Can I look into this and work on providing this feature?