Add a settings page for the nightlight

[mtwebster]

Depends on:

linuxmint/cinnamon-settings-daemon#402
linuxmint/cinnamon-desktop#245

[haggen88]

@mtwebster Perhaps of interest, here is a proposal for a new icon (for both Mint-X and Mint-Y):

• night light icons.zip

[mtwebster]

Hi, they look nice - my awesome icon is just a placeholder. Clem can take a look before we merge this stuff, he'll ultimately determine what we use.

Thanks

[mtwebster]

Merged - 8525e74

@haggen88 I added the Mint-X icon to Cinnamon (for fallback/non Mint installs) and the Mint-X theme.

I didn't do the Mint-Y theme because your icon's corner radii don't match what Mint-Y uses (or at least the existing icon I tried to modify there.

Can you have a look at that? Thanks!

[haggen88]

@mtwebster I added a border, maybe that will correct it.

• scalable_cs-nightlight__Mint Y.zip

[haggen88]

@mtwebster Now I noticed the difference in the borders, so I made this new icon by modifying an existing one.

• new scalable_cs-nightlight__Mint Y.zip

PS. For mint 22.1 you guys plan to add power profiles ?, I have a couple of icons if you are interested.