BREAKING: changes to CLI interface, moved to cobra CLI

To better support configuration and user friendliness, migrated to cobra based CLI.  The source tree structure has also changed to single go module, the server has been renamed hypd and client has been named hyp.  The original structure came into being organically, but now that the vision is more complete it's best to make these adjustments now.

hypd/cmd/secret.go

@@ -0,0 +1,44 @@
+/*
+Copyright © 2024 Steven Polley <himself@stevenpolley.net>
+*/
+package cmd
+
+import (
+	"fmt"
+
+	"deadbeef.codes/steven/hyp/otphyp"
+	"github.com/spf13/cobra"
+)
+
+// secretCmd represents the secret command
+var secretCmd = &cobra.Command{
+	Use:   "secret",
+	Short: "Generates a secret key for hyp",
+	Long: `Generates a secret for hyp which should be distributed to both the
+server and to clients.  
+
+Example:
+
+hypd generatesecret > hyp.secret`,
+	Run: func(cmd *cobra.Command, args []string) {
+		sharedSecret, err := otphyp.GenerateSecret()
+		if err != nil {
+			panic(fmt.Errorf("failed to generate shared secret: %w", err))
+		}
+		fmt.Println(sharedSecret)
+	},
+}
+
+func init() {
+	generateCmd.AddCommand(secretCmd)
+
+	// Here you will define your flags and configuration settings.
+
+	// Cobra supports Persistent Flags which will work for this command
+	// and all subcommands, e.g.:
+	// secretCmd.PersistentFlags().String("foo", "", "A help for foo")
+
+	// Cobra supports local flags which will only run when this command
+	// is called directly, e.g.:
+	// secretCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+}