add soft_media module

modules/readmes/soft_media.txt

@@ -0,0 +1,6 @@
+in the css
+
+	@import url("https://styles.alv.cx/modules/soft_media.css");
+
+this module makes reduces the opacity of all images to give the webpage a softer look,
+even when in light mode (this is default behaviour in dark mode).

modules/soft_media.css

@@ -0,0 +1,7 @@
+img, video {
+	opacity: .75;
+	transition: opacity .5s ease-in-out;
+}
+img:hover, video:hover {
+	opacity: 1;
+}