Application Endpoint Discovery First Contribution

[crissancas]

What type of PR is this?

Add one of the following kinds:

• enhancement/feature

What this PR does / why we need it:

The Application Discovery API extends beyond the capabilities of the
Simple Edge Discovery API by not only locating the nearest Edge Cloud Zone
but also directly linking to the application endpoints within those zones.
This PR covers intent 21.

Which issue(s) this PR fixes:

Fixes #212

Special notes for reviewers:

Changelog input

 release-note

Additional documentation

This section can be blank.

docs

[github-actions[bot]]

🦙 MegaLinter status: ✅ SUCCESS

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✅ JSON	eslint-plugin-jsonc	1	0	0	1.23s
✅ JSON	jsonlint	1		0	0.19s
✅ JSON	prettier	1	1	0	0.65s
✅ JSON	v8r	1		0	1.6s
✅ OPENAPI	spectral	3		0	6.14s
✅ REPOSITORY	git_diff	yes		no	0.38s
✅ REPOSITORY	secretlint	yes		no	4.45s
✅ YAML	yamllint	3		0	0.74s

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