extract GlobalOptions into internal/global package

Rough steps:
```
mv cmd/restic/global* cmd/restic/secondary_repo* internal/global/
sed -i "s/package main/package global/" internal/global/*.go
Rename "GlobalOptions" to "Options" in internal/global/
Replace everywhere " GlobalOptions" -> " global.Options"
Replace everywhere "\*GlobalOptions" -> " *global.Options"
Make SecondaryRepoOptions public
Make create public
Make version public
```

internal/global/global_release.go

@@ -0,0 +1,14 @@
+//go:build !debug && !profile
+// +build !debug,!profile
+
+package global
+
+import (
+	"io"
+
+	"github.com/spf13/cobra"
+)
+
+func RegisterProfiling(_ *cobra.Command, _ io.Writer) {
+	// No profiling in release mode
+}