* 1st version of adding system icon for files

* added SystemIconsService

* continued implementation

* changed reminder tag

* added support for extension who use uwp apps

* added support also to indexing using ,

* added wip

* added support to resolve lnk files

* fixed some lnk issues

* moved some code to new service IShellLinksService

* added fallback to builtin icons, when there is no shell icon

* updated comments

* renamed enum value

* added ShellIconsCacheService

* implemented cache

* added todos

* added ImageModel and csproj to implement it

* cleanup

* moved System.Drawing.Common to windows project

* started adding filter

* started adding settings for icons

* added comment

* some imporvments

* fix

* added caching of value

* added some notes in settings dialog

* renamed IconsService to IconsSettingsService

* continued rename

* added check of Windows

* cleanup

* cleanup

* renamed 'SystemIcon' to 'ShellIcon'

* moved strings to resources

* fixed comment

* cleanup and made code more clear

* changed code to be more clear

* cleanup

* fixed - dont crash on linux

* some cleanup and comments

* added key down on filters also selects next item

* moved code to new service 'quick-search

* added stubs for TextInput event

* cleanup

* add usage of TextInput instead of KeyToChar

* added settings dialogs

* renamed folder

* renamed namespace

* renamed file

* renamed interface

* renmaed enum

* renamed member

* renamed arg

* renamed file

* renamed class

* added comment

* fixed text on label

* added explenation

* fixed comment

* fixed todo

* added todo

* removed comment

* updated comments

* updated comment

* fixed: make sure to scroll to item

* refactoring in GetSelected

* fixed going to next row, using same letter repeatedly

* refactoring and fix of select of first item

* also reset selected index on clear of search

* cleanup

* fixed icon of keyboard in settings (before was copy of some existing icon)

* added help and fixed look of settings, almost no need for groupbox now

* added binding to disable row

* cleanup

* cleanup from unused style classes

* also go back when shift pressed

* cleanup

* moved code to static function so will be more clear

* some fixes

* more fix

* added clear search when switcing folders

* added comment

* added comment

* added comment and cleanup

* fixed all build error after sync from fork

* removed duplicate of file which was moved to other folder

* cleanup

* cleanup 2

* cleanup and comments

* added comments

* removed un-needed file

* added comments + cleanup

* cleanup 3

* added comments + cleanup 2

* remove unused file

* added comment

* cleanup