[WIP] PackIcon for MahApps

[punker76]

Idea is from @ButchersBoy, thx for this, more info here

• PackIconMaterial
• PackIconModern

usage

<mahapps:PackIconMaterial Kind="EmoticonCool" Height="24" Width="24" />

<mahapps:PackIconModern Kind="Cupcake" Height="24" Width="24" />

this will be replace the huge xaml icon file in the separate resource nuget.

Closes #2003 "VisualButton" That makes working with the XAML icons easier
Closes #2114 Icon color not changing on theme change (as #1029)
Closes #2275 Embed Material Design Icons (in addition to Modern UI Icons)?

some icons of the old modern ui icons can't convert, but this icons still available by the old resources

AppbarBilling
AppbarBookSide
AppbarConnection1x
AppbarConnection3g
AppbarConnection4g
AppbarConnectionEv
AppbarConnectionQualityHigh
AppbarConnectionQualityLow
AppbarConnectionQualityMedium
AppbarConnectionQualityVerylow
AppbarControlStop
AppbarCurrencyRupee
AppbarDatabaseMysql
AppbarDatabaseSql
AppbarDebugStop
AppbarDropper
AppbarFlagTexas
AppbarFrameworkNet
AppbarLanguageCsharp
AppbarMagnifyBrowse
AppbarMinecraftCivcraft
AppbarMoonFull
AppbarOpacity
AppbarOsX64
AppbarOsX86
AppbarProgress
AppbarResourceGroup
AppbarResource
AppbarSocialArtcom
AppbarSocialDelicious
AppbarSocialIndiegogo
AppbarSocialTheverge
AppbarSocialUntapped
AppbarStarwarsJedi
AppbarStockDown
AppbarStockUp
AppbarTeam
AppbarVideoHighdefinition
AppbarVideoStandarddefinition
AppbarVipLowercase

[michaelmairegger]

@punker76 👍

[bloritsch]

OK, this floats my boat.

[dsaf]

Awesome!