#20 add prometheus metrics endpoint

vendor/golang.org/x/sys/unix/syscall_linux_386.go

vendor/golang.org/x/sys/unix/syscall_linux_alarm.go

vendor/golang.org/x/sys/unix/syscall_linux_amd64.go

vendor/golang.org/x/sys/unix/syscall_linux_amd64_gc.go

vendor/golang.org/x/sys/unix/syscall_linux_arm.go

vendor/golang.org/x/sys/unix/syscall_linux_arm64.go

vendor/golang.org/x/sys/unix/syscall_linux_gc.go

vendor/golang.org/x/sys/unix/syscall_linux_gc_386.go

vendor/golang.org/x/sys/unix/syscall_linux_gc_arm.go

vendor/golang.org/x/sys/unix/syscall_linux_gccgo_386.go

vendor/golang.org/x/sys/unix/syscall_linux_gccgo_arm.go

vendor/golang.org/x/sys/unix/syscall_linux_mips64x.go

vendor/golang.org/x/sys/unix/syscall_linux_mipsx.go

vendor/golang.org/x/sys/unix/syscall_linux_ppc.go

vendor/golang.org/x/sys/unix/syscall_linux_ppc64x.go

vendor/golang.org/x/sys/unix/syscall_linux_riscv64.go

vendor/golang.org/x/sys/unix/syscall_linux_s390x.go

vendor/golang.org/x/sys/unix/syscall_linux_sparc64.go

vendor/golang.org/x/sys/unix/syscall_netbsd.go

vendor/golang.org/x/sys/unix/syscall_netbsd_386.go