Add the Elecrow CrowPanel 7.0" as a third board, and take the packages and the add-on from Gitea (0.2.93)

A board file for the Elecrow CrowPanel 7.0" (DIS08070H, ESP32-S3-WROOM-1-N4R8): 800x480 through mipi_rgb, GT911 on the
ESP32-S3's USB pins (elecrow_usb_phy.h frees them, behind a flag only this board sets), the Guition's vertical sizes
across a wider page, no rotation. Its 4 MB of flash take the CYD's budget: a partition table of the component's
(smart_display: partitions: 4mb_wide_slots, 1,984 KB slots), the icon fonts at 2 bits a pixel and the TLS client only
bring the firmware to 1,865,440 bytes, 91.8 % of a slot, with camera images kept. docs/ELECROW.md has the numbers and
the trade.

The add-on reads a large board's name from the type sensor's value, the editor offers the board under New screen and
draws the wide preview, tools/check.sh builds it with the budget, render_topbar and capture_ui take the panel's size.
Firmware 0.2.79; the CYD image is unchanged (1,633,760 bytes).

This fork builds from gittea.trippedonmy.name/Xandrossian/homeassistant_espscreen: the packages, the fonts, the
component and the add-on repository point there instead of GitHub.

screen_manager/app/camera_feed.py

@@ -1,4 +1,4 @@
-"""Camera images on a Guition screen (app 0.2.66, firmware 0.2.57).
+"""Camera images on a Guition screen (app 0.2.66, firmware 0.2.57), and on an Elecrow CrowPanel 7.0" (app 0.2.93).
 
 A screen never asks Home Assistant for a camera itself. This app fetches the snapshot with its own token (a
 camera's access token changes every five minutes), makes it exactly as large as the screen shows it and serves
@@ -62,8 +62,8 @@ MAX_LINKS = 64
 # What the screens load (online_image `format: BMP`).
 CONTENT_TYPE = 'image/bmp'
 # The pixel box per board and view; the image keeps its proportions inside it. Equal to the CAMERA_*
-# substitutions of packages/guition.yaml (tests/test_camera.py).
-BOXES = {'guition': {'full': (480, 480), 'thumb': (392, 220)}}
+# substitutions of the board's file under packages/boards/ (tests/test_camera.py).
+BOXES = {'guition': {'full': (480, 480), 'thumb': (392, 220)}, 'elecrow': {'full': (800, 480), 'thumb': (532, 220)}}
 
 
 def supported(entity):