Given IP-aware ConnKeys, ConnTuples aren't really required any more. ConnTuple
had two benefits:
- It preserved the original src/dst orientation from the packet headers it was
based on, which IPBasedConnKey now tracks and provides accessor methods for.
- In IPBasedAnalyzer::AnalyzePacket() its instance survived past the std:move()
of the key into NewConn(), which we sidestep by keeping the original src address
and port around until we need after the connection is obtained.
This largely copies over Spicy's `.clang-format` configuration file. The
one place where we deviate is header include order since Zeek depends on
headers being included in a certain order.
These were previously global methods in the old analyzer, and moving them
to be private members of ICMPAnalyzer broke the usage of them by at least
one external plugin.
This also also combines the old TransportLayerAnalyzer class into
SessionAdapter, and removes the old class. This requires naming changes
in a few places but no functionality changes.
