Expression Configuration Dialogue

• adds severity in the results view
• Bring back configure rules(with legacy support)
• Initiate a dialogue to define rule expressions if not found in local settings

The MissingFaultPath rule now correctly ignores "Wait for Amount of Time" and "Wait Until Date" nodes

Upgraded to lightning-flow-scanner-core v5.9.0. This release fixes the MissingFaultPath rule to correctly ignore "Wait for Amount of Time" and "Wait Until Date" nodes, checking fault paths only for relevant nodes like "Wait for Conditions". Resolves Issue #272 (contributed by @chazwatkins). See v5.9.0 release notes for full details.