sparkles: state api sdk (#262)

* ✨ Add state api

This is related to https://github.com/kairos-io/kairos/issues/34.

Starts to unify the API to retrieve the state in the sdk to have a common place to query system status information.

* 🤖 Add test

* Update go.mod

* ⚙️ Fine-tune detection of partitions

* 🤖 Add more fine-grained tests

* 🎨 Add /dev/ to partition name

* 🤖 Fixup tests

* ⚙️ Remount accessors

* ✨ Add state partition to cloud-init paths

* 📝 Upper case Kairos in motd

* 🎨 Add mounts sdk

* 🎨 Set grub options via SDK

* 🎨 Make it more idiomatic

internal/agent/hooks/bundles.go

@@ -12,12 +12,12 @@ func (b BundleOption) Run(c config.Config) error {
 
 	machine.Mount("COS_PERSISTENT", "/usr/local") //nolint:errcheck
 	defer func() {
-		machine.Umount("/usr/local")
+		machine.Umount("/usr/local") //nolint:errcheck
 	}()
 
 	machine.Mount("COS_OEM", "/oem") //nolint:errcheck
 	defer func() {
-		machine.Umount("/oem")
+		machine.Umount("/oem") //nolint:errcheck
 	}()
 
 	opts := c.Install.Bundles.Options()

internal/agent/hooks/gruboptions.go

@@ -4,25 +4,15 @@ import (
 	"fmt"
 
 	config "github.com/kairos-io/kairos/pkg/config"
-	"github.com/kairos-io/kairos/pkg/machine"
-	"github.com/kairos-io/kairos/pkg/utils"
+	"github.com/kairos-io/kairos/sdk/system"
 )
 
 type GrubOptions struct{}
 
 func (b GrubOptions) Run(c config.Config) error {
-
-	machine.Mount("COS_OEM", "/tmp/oem") //nolint:errcheck
-	defer func() {
-		machine.Umount("/tmp/oem")
-	}()
-	for k, v := range c.Install.GrubOptions {
-		out, err := utils.SH(fmt.Sprintf(`grub2-editenv /tmp/oem/grubenv set "%s=%s"`, k, v))
-		if err != nil {
-			fmt.Printf("could not set boot option: %s\n", out+err.Error())
-			return nil // do not error out
-		}
+	err := system.Apply(system.SetGRUBOptions(c.Install.GrubOptions))
+	if err != nil {
+		fmt.Println(err)
 	}
-
 	return nil
 }

internal/agent/hooks/kcrypt.go

@@ -21,7 +21,7 @@ func (k Kcrypt) Run(c config.Config) error {
 
 	machine.Mount("COS_OEM", "/oem") //nolint:errcheck
 	defer func() {
-		machine.Umount("/oem")
+		machine.Umount("/oem") //nolint:errcheck
 	}()
 
 	_ = os.MkdirAll("/oem/system/discovery", 0650)