feat: Implement a bbolt backed secrets store.

go.mod

@@ -2,9 +2,13 @@ module git.handmadecities.com/HMC/shhh
 
 go 1.27.2
 
-require github.com/spf13/cobra v1.10.2
+require (
+	github.com/spf13/cobra v1.10.2
+	go.etcd.io/bbolt v1.5.0
+)
 
 require (
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/spf13/pflag v1.0.10 // indirect
+	golang.org/x/sys v0.45.0 // indirect
 )