Add more kernel config checks

[v-thakkar]

This is for the follow-up PR after #686 has been merged.

• [ ] Check for the stack unwinding-related options
• [ ] Checks for the capabillities: CAP_SYS_ADMIN, CAP_BPF(after kernel 5.8), CAP_SYS_RESOURCE (for process) and CAP_PERF_MON (for perf_events)
• [ ] Check for Cgroup versions

Few other TODOs:

• [ ] Test (and handle) the case of having multiple kernel configs properly