feat: add "aqua policy set" command

pkg/cli/init_policy.go

@@ -11,9 +11,12 @@ import (
 func (runner *Runner) newInitPolicyCommand() *cli.Command {
 	return &cli.Command{
 		Name:      "init-policy",
-		Usage:     "Create a policy file if it doesn't exist",
+		Usage:     "[Deprecated] Create a policy file if it doesn't exist",
 		ArgsUsage: `[<created file path. The default value is "aqua-policy.yaml">]`,
-		Description: `Create a policy file if it doesn't exist
+		Description: `[Deprecated] Create a policy file if it doesn't exist
+
+Please use "aqua policy set" command instead.
+
 e.g.
 $ aqua init-policy # create "aqua-policy.yaml"
 $ aqua init-policy foo.yaml # create foo.yaml`,

pkg/cli/policy.go

@@ -11,6 +11,7 @@ func (runner *Runner) newPolicyCommand() *cli.Command {
 		Subcommands: []*cli.Command{
 			runner.newAllowPolicyCommand(),
 			runner.newDenyPolicyCommand(),
+			runner.newSetPolicyCommand(),
 		},
 	}
 }

pkg/cli/set_policy.go

@@ -0,0 +1,18 @@
+package cli
+
+import (
+	"github.com/urfave/cli/v2"
+)
+
+func (runner *Runner) newSetPolicyCommand() *cli.Command {
+	return &cli.Command{
+		Name:      "set",
+		Usage:     "Create a policy file if it doesn't exist",
+		ArgsUsage: `[<created file path. The default value is "aqua-policy.yaml">]`,
+		Description: `Create a policy file if it doesn't exist
+e.g.
+$ aqua policy set # create "aqua-policy.yaml"
+$ aqua policy set foo.yaml # create foo.yaml`,
+		Action: runner.initPolicyAction,
+	}
+}