First split into crockery init and crockery run

The init command creates a crockery.db file containing the domain name and
TLS keypair. The run command starts IMAP and SMTP services based on that file.

Supporting only a single domain is starting to look a bit unnecessary. We'll
see how that goes.

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

@@ -0,0 +1,41 @@
+// Code generated by linux/mkall.go generatePtracePair(arm, arm64). DO NOT EDIT.
+
+// +build linux
+// +build arm arm64
+
+package unix
+
+import "unsafe"
+
+// PtraceRegsArm is the registers used by arm binaries.
+type PtraceRegsArm struct {
+	Uregs [18]uint32
+}
+
+// PtraceGetRegsArm fetches the registers used by arm binaries.
+func PtraceGetRegsArm(pid int, regsout *PtraceRegsArm) error {
+	return ptrace(PTRACE_GETREGS, pid, 0, uintptr(unsafe.Pointer(regsout)))
+}
+
+// PtraceSetRegsArm sets the registers used by arm binaries.
+func PtraceSetRegsArm(pid int, regs *PtraceRegsArm) error {
+	return ptrace(PTRACE_SETREGS, pid, 0, uintptr(unsafe.Pointer(regs)))
+}
+
+// PtraceRegsArm64 is the registers used by arm64 binaries.
+type PtraceRegsArm64 struct {
+	Regs   [31]uint64
+	Sp     uint64
+	Pc     uint64
+	Pstate uint64
+}
+
+// PtraceGetRegsArm64 fetches the registers used by arm64 binaries.
+func PtraceGetRegsArm64(pid int, regsout *PtraceRegsArm64) error {
+	return ptrace(PTRACE_GETREGS, pid, 0, uintptr(unsafe.Pointer(regsout)))
+}
+
+// PtraceSetRegsArm64 sets the registers used by arm64 binaries.
+func PtraceSetRegsArm64(pid int, regs *PtraceRegsArm64) error {
+	return ptrace(PTRACE_SETREGS, pid, 0, uintptr(unsafe.Pointer(regs)))
+}