Add eBPF tutorial templates and update SUMMARY files

- Created SUMMARY.md.template and SUMMARY.zh.md.template for eBPF tutorial.
- Updated generate_toc.py to generate table of contents for English and Chinese versions.
- Added configuration files for new eBPF examples, categorizing them by level and type.
- Updated SUMMARY.md and SUMMARY.zh.md to reflect new lessons and reorganized sections.
- Introduced new features related to GPU and tracing in the tutorial.

src/features/bpf_arena/.config

@@ -0,0 +1,2 @@
+level=Depth
+type=Features

src/features/bpf_iters/.config

@@ -0,0 +1,2 @@
+level=Depth
+type=Features

src/features/bpf_wq/.config

@@ -0,0 +1,2 @@
+level=Depth
+type=Features