Add dynamic SQL Agent job discovery

[Ducsi]

Summary

Adds an optional runtime checkbox to show all SQL Server Agent jobs discovered for the selected date or week, without requiring users to edit config.json.

Configured maintenance jobs remain the default view and continue to appear first using the configured labels and ordering.

Changes

• Adds Show all SQL Agent jobs checkbox to Week Overview and Day Detail.
• Keeps the checkbox runtime-only and unchecked by default.
• Supports include-all querying for completed, running, scheduled, and job step command data.
• Adds a runtime row catalog so dynamically discovered jobs can be rendered without changing config.
• Updates README wording to distinguish curated config jobs from dynamic discovery.

Validation

• Ran dotnet build src/SQLJobVisualizer/SQLJobVisualizer.csproj
• Build succeeded with 0 warnings and 0 errors.

Screenshots