## Summary of the Pull Request
Introduce the `IconPathConverter` to `TerminalApp`. `Command` and `Profile` now both return the unexpanded icon path. `IconPathConverter` is responsible for expanding the icon path and retrieving the appropriate icon source.
This also removes `Profile`'s expanded icon path and uses the `IconPathConverter` when necessary. This allows users to set profile icons to emoji as well. However, emoji do not appear in the jumplist.
## References
Based on #7667
## PR Checklist
* [X] Closes#7784
* [x] Documentation updated. If checked, please file a pull request on [our docs repo](https://github.com/MicrosoftDocs/terminal) and link it here: #xxx
* [x] Schema updated.
## Validation Steps Performed
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