✨ add stop command

Closes #7

cmd/stop.go

@@ -0,0 +1,55 @@
+/*
+Copyright © 2021 James Walker <walkah@walkah.net>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+	"github.com/walkah/workon/tmux"
+)
+
+// stopCmd represents the stop command
+var stopCmd = &cobra.Command{
+	Use:   "stop",
+	Short: "Stop a running project",
+	Args:  cobra.RangeArgs(0, 1),
+	Run: func(cmd *cobra.Command, args []string) {
+		var projects []string
+		if len(args) == 0 {
+			t := tmux.Tmux{}
+			projects = t.ListSessions()
+		} else {
+			projects = args
+		}
+
+		for _, project := range projects {
+			fmt.Println("stopping", project)
+			tmux.StopProject(project)
+		}
+	},
+	ValidArgsFunction: completeProjects,
+}
+
+func init() {
+	rootCmd.AddCommand(stopCmd)
+}