SNOW-988145: Unable to delete or override existing connection in SnowCLI

[sfc-gh-yostrinsky]

Description

When creating a connection using snow connection add it fails if the connection already exists. Please consider the following two features:

1. Add --override the will override a connection if already exists
2. Add snow connection remove that will remove a connection (and will return 4, not error, if the connection doesn't exist)

Context

No response

[fletchertyler914]

I just ended up manually deleting it from the config file.