Add a command to explicitly run code analysis on a given project/solution

[mavasani]

Is your feature request related to a problem? Please describe.

Equivalent of Run Code Analysis command in VS to manually execute code analysis on demand for a project/solution. See https://learn.microsoft.com/en-us/visualstudio/code-quality/how-to-run-code-analysis-manually-for-managed-code for details

Describe the solution you would like

• Add a new solution explorer command on project and solution nodes to trigger code analysis in background
• This may need some work at the Roslyn/LSP API layer to allow querying diagnostics for a specific project/solution

[mavasani]

Closing as a duplicate of customer request: #6147