Add "Google Notes Keep" non free app icon, improve "Google Pixel Tips" non free app icon

app/build.gradle

.../chromatic/res/drawable-hdpi/nonfree_google_noteskeep.png

app/src/chromatic/res/drawable-hdpi/nonfree_google_tips.png

.../chromatic/res/drawable-mdpi/nonfree_google_noteskeep.png

app/src/chromatic/res/drawable-mdpi/nonfree_google_tips.png

...chromatic/res/drawable-xhdpi/nonfree_google_noteskeep.png

app/src/chromatic/res/drawable-xhdpi/nonfree_google_tips.png

...hromatic/res/drawable-xxhdpi/nonfree_google_noteskeep.png

...src/chromatic/res/drawable-xxhdpi/nonfree_google_tips.png

...romatic/res/drawable-xxxhdpi/nonfree_google_noteskeep.png

...rc/chromatic/res/drawable-xxxhdpi/nonfree_google_tips.png

app/src/main/res/values/iconpack.xml

app/src/main/res/xml/appfilter.xml

app/src/main/res/xml/drawable.xml

icons/chromatic/nonfree_google_noteskeep.svg

icons/chromatic/nonfree_google_tips.svg