Better Image handling (#2665)

* enhance asset mgmt

- invoke ico directly
- invoke ico only at shortcut creation
- remove "ConvertTo-Icon" Function file

- removed image from xaml
- added stackpanel to xaml
- added functions to create viewbox with image
- added logic to add image via code to xaml & customdialog
- changed title color for customdialog

- remove webinvokes for assets from main.ps1

TODO: convert images into bitmap base64 string & add them directly into invoke-WinUtiltaskbaritem.ps1

* improve viewboxfunction

- add logo + checkmark + warning
- add params
- render on param "render"
- custom dialog logo function call fix
- main logo function call fix
- update winutiltaskbaritem to use new images

* fix sizing

- warning & checkmark sizing fix
- remove unneded comments

* fixes

- remove unneeded redundancy of "$canvas = New-Object Windows.Controls.Canvas"
- adjust empty lines
- use LimeGreen instead of Green

* fix layouting

* fixes

- use correct ctt blue color #0567ff
- remove unneeded comments
- rename Logoview to assets

* performance improvement

instead of rendering the image another time on each item switch, it caches it at the start and uses the render afterwards

* redo gray part of winutil logo

* correct gray shade

* fix coloring

* ise ico if available

---------

Co-authored-by: Chris Titus <contact@christitus.com>

config/themes.json

@@ -21,7 +21,6 @@
         "TabRowHeightInPixels":   "50",
         "IconFontSize":     "14",
         "IconButtonSize":   "35",
-        "WinUtilIconSize":        "Auto",
         "SettingsIconFontSize":   "18",
         "CloseIconFontSize":      "18",