Allow images to be downloaded from URLs (#5214)

Co-authored-by: guillempages <guillempages@users.noreply.github.com>
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

tests/test2.yaml

@@ -753,6 +753,18 @@ image:
     file: pnglogo.png
     type: RGB565
     use_transparency: no
+  - id: web_svg_image
+    file: https://raw.githubusercontent.com/esphome/esphome-docs/a62d7ab193c1a464ed791670170c7d518189109b/images/logo.svg
+    resize: 256x48
+    type: TRANSPARENT_BINARY
+  - id: web_tiff_image
+    file: https://upload.wikimedia.org/wikipedia/commons/b/b6/SIPI_Jelly_Beans_4.1.07.tiff
+    type: RGB24
+    resize: 48x48
+  - id: web_redirect_image
+    file: https://avatars.githubusercontent.com/u/3060199?s=48&v=4
+    type: RGB24
+    resize: 48x48
 
   - id: mdi_alert
     file: mdi:alert-circle-outline