feat: added KV storage interface

pkg/storage/disk.go

@@ -0,0 +1,11 @@
+package storage
+
+type DiskStorage struct{}
+
+func (ds *DiskStorage) Read(k string) error {
+	return nil
+}
+
+func (ms *DiskStorage) Write(k string, v any) error {
+	return nil
+}

pkg/storage/memory.go

@@ -0,0 +1,20 @@
+package storage
+
+import "fmt"
+
+type MemoryStorage struct {
+	Data map[string]any
+}
+
+func (ms *MemoryStorage) Read(k string) (any, error) {
+	v, ok := ms.Data[k]
+	if ok {
+		return v, nil
+	}
+	return nil, fmt.Errorf("value does not exist")
+}
+
+func (ms *MemoryStorage) Write(k string, v any) error {
+	ms.Data[k] = v
+	return nil
+}

pkg/storage/storage.go

@@ -0,0 +1,13 @@
+package storage
+
+type KVStore interface {
+	Get(k string) (any, error)
+	Set(k string, v any) error
+	GetData() any
+}
+
+type KVStaticStore[T any] interface {
+	Get(k string) (T, error)
+	Set(k string, v T) error
+	GetData() T
+}