feat: Rename the card to advanced-camera-card (#1873)

Whilst the Frigate support in this card is the best among camera
engines, the name incorrectly suggests that Frigate is a requirement.
Instead, to broaden the appeal, change to more camera agnostic name.
This does not suggest any change in priority, role or support for
Frigate.

This change is likely to be bug prone, due to the size of the rename --
the code contains 1500+ references to "Frigate" most of which make sense
to rename, some which do not, all of which needed human assessment.

- Closes #1298


BREAKING CHANGE: References to `frigate-card` in all kinds of
configuration need to be updated to `advanced-camera-card`. An automated
config upgrade should take care of the majority of usecases (click `Edit
-> Upgrade -> Save`), though may not be perfect.

src/images/README.md

@@ -1,25 +1,22 @@
 # Image Copyright
 
-## frigate-bird-in-sky.jpg
+## iris-screensaver.jpg
 
-**Link**: https://www.flickr.com/photos/dianasch/47543120431
+**Link**: https://unsplash.com/photos/purple-and-white-flower-in-tilt-shift-lens-y4xISRK8TUg
 
-**Description**: A Frigate bird with a very large wingspan (7 ft) soaring overhead on Sanibel Island, Florida.
+**Description**: Iris flowers in Vancouver Park.
 
-**Copyright**: Diana Robinson
+**Copyright**: Kevin Castel
 
-**License**: https://creativecommons.org/licenses/by-nc-nd/2.0/
+**License**: https://unsplash.com/license
 
 **Image Formatting Process**:
 
-- Horizontal mirror (to face the opposite direction)
-- Cropped for 16:9
 - Scaled down to 492x277
 - Quality @ 85%
 
 ```sh
-$ convert -extent 2048x1152 -flop -gravity center 47543120431_b285c45ac8_k.jpg frigate-bird-in-sky.jpg
-$ mogrify -strip -interlace Plane -quality 85% -scale 492x277 frigate-bird-in-sky.jpg
+$ convert -strip -interlace Plane -quality 85% -scale 492x277 iris-screensaver-original.jpg iris-screensaver.jpg
 ```
 
 ## iris.svg / iris-outline.svg