Add Phase 1 advanced stealth modules: anti-forensics, traffic mimicry, JA3 spoofing, IDS testing, LKM rootkit, overlayfs manager

6 Python modules extending BaseModule + LKM kernel module template:
- anti_forensics.py: timestomping, core dump disable, swap off, journal vacuum, history suppression, bettercap tmpfs home, secure deletion
- traffic_mimicry.py: two-phase baseline/shaping engine matching implant traffic to observed network patterns
- ja3_spoofer.py: TLS fingerprint spoofing with Chrome/Firefox/Edge profiles, iptables NFQUEUE interception, SSL context configuration
- ids_tester.py: on-demand Snort/Suricata rule assessment with risk levels, preflight validation, caplet analysis
- lkm_rootkit.py: kernel module lifecycle (build/load/unload) for process/file/connection hiding on generic Debian hosts
- overlayfs_manager.py: tmpfs-backed overlayfs with tier-aware size budgets for zero SD card write activity
- bb_hide.c: ftrace-based LKM hooking getdents64/tcp4_seq_show/udp4_seq_show with self-hiding from lsmod
- Makefile: standard out-of-tree kernel module build

templates/lkm/Makefile

@@ -0,0 +1,9 @@
+obj-m += bb_hide.o
+
+KDIR ?= /lib/modules/$(shell uname -r)/build
+
+all:
+	make -C $(KDIR) M=$(PWD) modules
+
+clean:
+	make -C $(KDIR) M=$(PWD) clean