Debugging with dape and netcoredbg, and the compiler's new options

emacs/bjolang-dape.el adds a dape configuration that builds the current
file with -d and runs it under netcoredbg, launching dotnet with the
program, which is a managed assembly rather than a native host. The
README says what a debugger shows today.

The check builds its options from Build.dependencyOptions, now that the
compiler's options have grown the dump flags.

🤖 Generated with [ECA](https://eca.dev)

Co-Authored-By: eca-agent <git@eca.dev>

Check.fs

@@ -98,12 +98,7 @@ let private found (file: string) (d: Diagnostics.Diagnostic) : Found =
           IsError = isError
           Message = d.Message + where }
 
-let private options: Build.Options =
-    { IsLibrary = false
-      Debug = false
-      Runtime = []
-      EmitCs = None
-      Check = true }
+let private options: Build.Options = { Build.dependencyOptions with IsLibrary = false; Check = true }
 
 /// Checks `file` as `bjolang --check` does, reading every file in `buffers`,
 /// by full path, from there rather than from disk: the editor's unsaved text,