Plugin entry now needs to exist in versions.json in order for connections to be loaded

[cbruno10]

Describe the bug
In v0.22.0, if you locally build a plugin without ever running steampipe plugin install <plugin_name>, connections for that plugin will never be loaded or will be loaded in error state. In v0.21.8 and earlier versions, you could still load connections in.

Workarounds are:

• Run steampipe plugin install if it's on the Hub
• Hack in an entry in versions.json

Steampipe version (steampipe -v)
v0.22.0

To reproduce

• Run make in a locally cloned plugin dir that has never been installed before
• Create a valid .spc file for that plugin
• Run steampipe query and run .connections

Expected behavior
Connections should be loaded

Additional context
Add any other context about the problem here.