Add demo Angular code

[adrianiurov]

just some sample Angular code

[github-actions]

Rule 1, "All SMART Components have dependencies in constructor": FAIL
Rule 2, "All DUMB components do NOT have dependencies in constructor": PASS
Rule 3, "All SMART components have a reference to a facade service": FAIL
Rule 4, "All DUMB components do NOT have any reference to a facade service": PASS
Rule 5, "All modules contain exactly one facade service": FAIL
Rule 6, "No DUMB Component contains any SMART component": FAIL