refactor: split cache pkg into two packages. One for Interface & one for implementation

Author: Oudwins

pkg/cache/cache.go

@@ -0,0 +1,6 @@
+package cache
+
+type ICache interface {
+	Get(string) string
+	Set(string, string)
+}

pkg/cache/lru.go renamed to pkg/lru/lru.go

@@ -1,6 +1,10 @@
 package lru
 
-import "sync"
+import (
+	"sync"
+
+	"github.com/Oudwins/tailwind-merge-go/pkg/cache"
+)
 
 type node struct {
 	key  string
@@ -9,11 +13,6 @@ type node struct {
 	next *node
 }
 
-type Cache interface {
-	Get(string) string
-	Set(string, string)
-}
-
 type LRU struct {
 	maxCapacity int
 	capacity    int
@@ -81,7 +80,7 @@ func (lru *LRU) remove(n *node) {
 	lru.capacity--
 }
 
-func Make(maxCapacity int) Cache {
+func Make(maxCapacity int) cache.ICache {
 	head := &node{}
 	tail := &node{}
 	tail.next = head