feat(Platform Notifications): add new service to the project

[AkosSz]

PR summary

PR Checklist

Please make sure that your PR fulfills the following requirements:

• The commit message follows the Angular Commit Message Guidelines.
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

Current vs new behavior

Platform notifications integration added to the sdk.

Does this PR introduce a breaking change?

• Yes
• No

Other information

Integration Test results

unit test results

[CLAassistant]

All committers have signed the CLA.

[AkosSz]

Do not merge yet

[pyrooka]

You need to run the detect secrets tool through the project and update the .secrets.baseline file to make our CI happy. :) Also, please attach a screenshot of a clean examples test run too. Other than that, the changes are in a pretty good shape!

[AkosSz]

example test runs:

were you thinking about adding the detect secrets as a pre-commit hook? 😅

[pyrooka]

were you thinking about adding the detect secrets as a pre-commit hook? 😅

Nope, just updating the .secrects.baseline file like you did in 50e76f3. Thanks for making these changes, we are good now!