Move code into new component package

This commit cleans up the resources in the 'embed' package, and instead
moves them into subpackages of a new 'compose' package. This makes sure
that '.env' templates and docker compose contexts are located in the
same location.

component/sql/sql.go

@@ -0,0 +1,39 @@
+package sql
+
+import (
+	"context"
+	"embed"
+	"io/fs"
+	"time"
+
+	"github.com/FAU-CDI/wisski-distillery/component"
+	"github.com/FAU-CDI/wisski-distillery/internal/stack"
+)
+
+type SQL struct {
+	component.ComponentBase
+
+	ServerURL string // upstream server url
+
+	PollContext  context.Context // context to abort polling with
+	PollInterval time.Duration   // duration to wait for during wait
+}
+
+func (SQL) Name() string {
+	return "sql"
+}
+
+//go:embed all:stack
+var resources embed.FS
+
+func (ssh SQL) Stack() stack.Installable {
+	return ssh.ComponentBase.MakeStack(stack.Installable{
+		Resources:   resources,
+		ContextPath: "stack",
+
+		MakeDirsPerm: fs.ModeDir | fs.ModePerm,
+		MakeDirs: []string{
+			"data",
+		},
+	})
+}