Feature: notification library change to Windows APP SDK / misc. improvements&features

[amadeo-alex]

This PR:

• Mainly: replaces UWP.Toolkit library which was used to handle Windows Notifications with Windows APP SDK.
  • adds proper handling of notifications activated when HASS.Agent is not running
  • expands on the unfinished "user input" feature
• changes StorageManager
  • to return unchanged URI when it starts with "file://" - notification library handles it correctly (for example file:///C:/Users/Amadeo/Desktop/temp/sumCat.jpg)
  • to use stored HA token for bearer authentication when requested resource is on the same domain as HA
• adds an option to treat the "URI" elements of "notification action" just like Android Compantion App does - open them in the browser (default or configured one)
• expands on the "Test Notification" so that it includes an image, buttons & input box
  • currently the image links to license free cat picture, might be worth moving it to some HASS.Agent domain
• adds a note during onboarding regarding HA API "admin token" requirement for actionable notification functionaly (otherwise it ends up with Login attempt or request with invalid authentication from HOSTNAME (IPADDRESS). Requested URL: '/api/events/hass_agent_notifications'. (None) error in HA)
• changes how log filename is generated (strange strings like multiple "-" characters caused it to be malformed)

Reason for the library change is the M$ recommendation when "registry issues" occur with UWP Toolkit, apparently they do not plan on tackling the issue (microsoft/microsoft-ui-xaml#5689)

Should remediate/fix following issues:

• no windows popup HASS.Agent#319
• No notifications on Windows 11 HASS.Agent#316
• Notifications don't work on windows HASS.Agent#289
• Bug: windows hass.agent keeps crashing on program start up HASS.Agent#242
• Actionable notification with URL doesnt work HASS.Agent-Integration#29
• and any others I might have missed which "appear" as either HASS.Agent not starting at all or notifications not appearing (I've encountered at least a few comments on reddit mentioning those)

Due to Windows APP SDK shipping with it's own WebView2 instead of making it a nuget dependency (microsoft/microsoft-ui-xaml#5689), the WebView2 which we originally used needs to be wrapped in an alias.

@LAB02-Admin Windows APP SDK requires installation of an additional user facing appx package - https://learn.microsoft.com/en-us/windows/apps/windows-app-sdk/downloads. Should this be included as part of the installation application?
If it is not installed, user is prompted with following message during HASS.Agent launch:

Clicking on "Yes" redirects to the download page mentioned above.

Appx packages before and after installation:

---

Additional notification settings regarding URI (defaults to false to maintain backwards compatibility):

Example of notification, where clicking "Open URI" will open a site with cat pics:

service: notify.amadeo_pc
data:
  title: Test
  message: This is an actionable test message.
  data:
    actions:
      - action: "yes"
        title: "Yes"
      - action: "no"
        title: "No"
      - action: "openuri"
        title: "Open URI"
        uri: "https://www.cat-lovers-only.com"
    inputs:
      - id: testId
        text: testText
        title: testTitle

---

New test notification:

---

Regarding the miscellaneous "user input", it works exactly the same as button options.
Example, this HA service call

service: notify.amadeo_pc
data:
  title: Some msg title
  message: Test msg
  data:
    image: >-
      https://smea.uw.edu/wp-content/uploads/sites/11/2017/03/CURRENTSBLOG_Cat_2.jpg
    actions:
      - action: "yes"
        title: "Yes"
      - action: "no"
        title: "No"
    inputs:
      - id: testId
        text: testText
        title: testTitle

produces following notification on my machine

If at the same time following automation is configured within HA

alias: HASS Notification test
description: ""
trigger:
  - platform: event
    event_type: hass_agent_notifications
    event_data:
      action: "yes"
condition: []
action:
  - service: notify.amadeo_pc
    data:
      message: "{{ trigger.event.data.input.testId }}"
      title: Action Response
mode: single

filling in text box with "SomeAwesomeText" and clicking "Yes", causes following new notification to appear

@LAB02-Admin this certainly would require adjustments in the documentation, I'll gladly do them but I couldn't find the repository :D

[amadeo-alex]

On hold until LAB02-Research/HASS.Agent#278 is implemented.
Done.

[amadeo-alex]

Again, on hold until LAB02-Research/HASS.Agent#306 is implemented.
Done.