feat: support image-png/bmp/gif

src/bitmap/LICENSES.toml

@@ -1,5 +1,23 @@
 [[licenses]]
 file = 'Niinsaare_järv.jpg'
 license = "CC-BY-SA-3.0"
-authors = ["Ivar Leidus", "Wikimedia Commons"]
+authors = ["Ivar Leidus"]
 source = 'https://commons.wikimedia.org/wiki/File:Niinsaare_j%C3%A4rv.jpg'
+
+[[licenses]]
+file = 'Tulipa_suaveolens_floriade_to_Canberra.jpg'
+license = "CC-BY-SA-3.0"
+authors = ["John O'Neill"]
+source = 'https://commons.wikimedia.org/wiki/File:Tulipa_suaveolens_floriade_to_Canberra.jpg'
+
+[[licenses]]
+file = 'Hot-air_balloon_in_Tambov_-_02.jpg'
+license = "CC-BY-SA-4.0"
+authors = ["Alexander Novikov"]
+source = 'https://commons.wikimedia.org/wiki/File:Hot-air_balloon_in_Tambov_-_02.jpg'
+
+[[licenses]]
+file = 'Van_Gogh_-_Starry_Night_-_Google_Art_Project.jpg'
+license = "CC0-1.0" # Public Domain actually.
+authors = ["Vincent van Gogh", "Google Arts & Culture"]
+source = 'https://commons.wikimedia.org/wiki/File:Van_Gogh_-_Starry_Night_-_Google_Art_Project.jpg'