Add seek and scan predicate summary details to plans

[MasayukiOzawa]

Summary

• Add a new SeekScanPredicateEntry model to capture predicate details for seek and scan operators.
• Extend showplan parsing to collect table/index context plus Predicate and Seek predicate values into statement summaries.
• Surface the new data in the web UI with a dedicated Seek/Scan predicates table and matching styling.
• Update core tests and add parser coverage for predicate extraction.

Testing

• Added parser unit coverage for scan/seek predicate collection from representative showplan XML.
• Updated existing core and projection tests to account for the expanded statement summary model.
• Not run (not requested)

[Copilot]

Pull request overview

Adds a new statement-summary surface for seek/scan predicate information, extending Core parsing to extract predicate/seek predicate text and exposing it in the Blazor UI as a dedicated summary table.

Changes:

• Introduced SeekScanPredicateEntry and extended StatementPlanSummary to carry seek/scan predicate summaries.
• Updated ShowplanParser to collect predicate + seek predicate details for seek/scan operators with object context (db/schema/table/index).
• Rendered the new summary data in Home.razor with matching table styling; updated/added Core tests accordingly.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/MSSQLPlanViewer.Core.Tests/TestPlanFactory.cs	Updated test plan factory summaries to include empty seek/scan predicate entries.
tests/MSSQLPlanViewer.Core.Tests/ShowplanParserTests.cs	Added coverage asserting predicate + seek predicate extraction into statement summaries.
tests/MSSQLPlanViewer.Core.Tests/PlanProjectionTests.cs	Updated summary construction in projection tests to account for the new summary field.
tests/MSSQLPlanViewer.Core.Tests/PlanComparisonServiceTests.cs	Updated statement summary creation to include empty seek/scan predicate entries.
src/MSSQLPlanViewer.Web/Components/Pages/Home.razor.css	Added styling for the seek/scan predicate summary table and predicate cell wrapping.
src/MSSQLPlanViewer.Web/Components/Pages/Home.razor.cs	Added helper for formatting table name display for predicate entries.
src/MSSQLPlanViewer.Web/Components/Pages/Home.razor	Added a new “Seek/Scan predicates” summary table wired to statement summary data and node selection.
src/MSSQLPlanViewer.Core/Parsing/ShowplanParser.cs	Collected seek/scan predicate entries from parsed nodes and attached them to statement summaries.
src/MSSQLPlanViewer.Core/Models/StatementPlanSummary.cs	Extended the statement summary model with SeekScanPredicateEntries.
src/MSSQLPlanViewer.Core/Models/SeekScanPredicateEntry.cs	Added the new model capturing node/object context plus predicate/seek predicate text.