Feature/ebpf core

[siddh34]

New metrics

Field	Type	Size (bytes)	Offset (bytes)	Description
delta_us	u64	8	-	Elapsed time in microseconds (delta)
ts_us	u64	8	-	Timestamp (nanosecond source converted to µs)
tgid	u32	4	-	Thread-group id / PID
comm	[u8; 16]	16	-	Process name (fixed 16 bytes, C-style string)
lport	u16	2	14	Local port (host order or stored as-is)
dport_be	u16	2	12	Destination port (big-endian / network order)
af	u16	2	16	Address family (e.g., AF_INET=2, AF_INET6=10)
saddr_v4	u32	4	0	IPv4 source address (network-order u32)
daddr_v4	u32	4	4	IPv4 destination address (network-order u32)
saddr_v6	[u32; 4]	16	56	IPv6 source address as four u32 words
daddr_v6	[u32; 4]	16	75	IPv6 destination address as four u32 words

[siddh34]

@LorenzoTettamanti please check and verify on your side!

[LorenzoTettamanti]

@siddh34 everything is working as expected! Closing the issue #78.