Adds server location submenu to the tray with flags (#8459)

* Select server location from menu bar

* Added image support to local tray fork

* Added back country code

* Use new tray manager repo

* Remove local packages

* Pinned to specific tray_manager version

* Add country code validation for tray menu flag icons (#8463)

* Initial plan

* Add country code validation for flag icons in system tray

Co-authored-by: myleshorton <1143966+myleshorton@users.noreply.github.com>

* Add unit tests for safeFlagPath validation

Co-authored-by: myleshorton <1143966+myleshorton@users.noreply.github.com>

* Add comment explaining hardcoded flag list rationale

Co-authored-by: myleshorton <1143966+myleshorton@users.noreply.github.com>

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: myleshorton <1143966+myleshorton@users.noreply.github.com>

* removed extraneous method

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Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>
Co-authored-by: myleshorton <1143966+myleshorton@users.noreply.github.com>

Author: myleshorton