Flattens analysis structure a bit

Instead of mirroring the QMDL container format exactly, let our analysis
files just be flat lists of packet analysis. Also removes the dummy
analyzer and adds version numbers to analysis reports and Analyzers

lib/src/analysis/imsi_requested.rs

@@ -34,6 +34,10 @@ impl Analyzer for ImsiRequestedAnalyzer {
         Cow::from("Tests whether the ME sends an IMSI Identity Request NAS message")
     }
 
+    fn get_version(&self) -> u32 {
+        1
+    }
+
     fn analyze_information_element(&mut self, ie: &InformationElement) -> Option<Event> {
         self.packet_num += 1;
         let payload = match ie {