Minimal version of the LTE downgrade analyzer

This also renames the lte_parser crate to telcom_parser, since it'll
handle any 2G or 3G parsing going forward.

lib/src/lib.rs

@@ -7,5 +7,4 @@ pub mod log_codes;
 pub mod gsmtap;
 pub mod gsmtap_parser;
 pub mod pcap;
-pub mod lte_rrc;
 pub mod analysis;