BUG: When using Statspack as a source and there is less than 7 days of snapshots, alert the user and collect whatever is available.

### Description

If the very first Statspack snapshot occurs within the collection window, it prevents collection of performance stats.

### Version

None

### Priority

priority:2

### What oracle database version are you seeing the problem on?

None

### Which sql script version ?

None

### Relevant log output

_No response_