bug(common): include derived types in dependency graph

[sanketshevkar]

Closes #56

Changes

• While visiting classDeclarations, while adding super type as a dependency edge, we also add the supertype as a vertex and the classDeclaration as its dependent type so that we can include derived types of the super types in tree after we get the connected graph

Flags

Screenshots or Video

Related Issues

• Issue Enhance graph.findConnectedGraph to use type hierarchy #56

Author Checklist

• Ensure you provide a DCO sign-off for your commits using the --signoff option of git commit.
• Vital features and changes captured in unit and/or integration tests
• Commits messages follow AP format
• Extend the documentation, if necessary
• Merging to main from fork:branchname

[coveralls]

coverage: 98.782%. first build
when pulling 3693114 on sanketshevkar:sanketshevkar/graph-visitor-dependencies
into 14aeb8b on accordproject:main.

[mttrbrts]

We appear to have lost orphaned nodes in the graph. We should still write these (before tree-shaking).

[sanketshevkar]

I don't think we are losing the orphaned nodes in the graph. I've missed out the write step

writer.writeLine(1, `\`${source}\``);

above in print method. Let me fix that.