PVF worker: Maintain lists of used syscalls (#1663)

Co-authored-by: Mira Ressel <mira@parity.io>

polkadot/scripts/list-syscalls/execute-worker-syscalls

@@ -0,0 +1,74 @@
+0 (read)
+1 (write)
+2 (open)
+3 (close)
+4 (stat)
+5 (fstat)
+7 (poll)
+8 (lseek)
+9 (mmap)
+10 (mprotect)
+11 (munmap)
+12 (brk)
+13 (rt_sigaction)
+14 (rt_sigprocmask)
+15 (rt_sigreturn)
+16 (ioctl)
+19 (readv)
+20 (writev)
+24 (sched_yield)
+25 (mremap)
+28 (madvise)
+39 (getpid)
+41 (socket)
+42 (connect)
+45 (recvfrom)
+46 (sendmsg)
+53 (socketpair)
+56 (clone)
+60 (exit)
+61 (wait4)
+62 (kill)
+72 (fcntl)
+79 (getcwd)
+80 (chdir)
+82 (rename)
+83 (mkdir)
+87 (unlink)
+89 (readlink)
+96 (gettimeofday)
+97 (getrlimit)
+99 (sysinfo)
+102 (getuid)
+110 (getppid)
+131 (sigaltstack)
+140 (getpriority)
+141 (setpriority)
+144 (sched_setscheduler)
+157 (prctl)
+158 (arch_prctl)
+165 (mount)
+166 (umount2)
+200 (tkill)
+202 (futex)
+204 (sched_getaffinity)
+213 (epoll_create)
+217 (getdents64)
+218 (set_tid_address)
+228 (clock_gettime)
+230 (clock_nanosleep)
+231 (exit_group)
+232 (epoll_wait)
+233 (epoll_ctl)
+257 (openat)
+262 (newfstatat)
+263 (unlinkat)
+272 (unshare)
+273 (set_robust_list)
+281 (epoll_pwait)
+284 (eventfd)
+290 (eventfd2)
+291 (epoll_create1)
+302 (prlimit64)
+318 (getrandom)
+319 (memfd_create)