Huge code cleanup, Architectury & Watermedia

- A huge cleanup of the codebase
- Make use of the Architectury build system
- Replaced VideoLib with WATERMeDIA (More features, better stability, multiplatform support)

common/src/main/java/eu/midnightdust/picturesign/util/PictureInfo.java

@@ -0,0 +1,4 @@
+package eu.midnightdust.picturesign.util;
+
+public record PictureInfo(String url, long start, long end, int volume) {
+}