shove unparsed 3g/2g traffic into pcap

### Prerequisites

- [x] I have read [CONTRIBUTING.md](https://github.com/EFForg/rayhunter/blob/main/CONTRIBUTING.md)

### What problem does this feature solve or what does it enhance?

Right now we ignore 3g/2g traffic and we silently drop it (or send an error about not being able to parse it) but we don't put it into the pcap, we should fix this

### Proposed Solution

We should wrap 3g/2g traffic in a gsmtap header and shove it in the PCAP so it can be manually analyzed! We should also remove the extraneous error messages about not parsing from rayhunter check, as this is terrible UI. Between this and #1012 we effectively can't review international pcaps.

### Alternatives Considered

_No response_