feat: UserInfo 를 저장할 수 있다.

android/festago/data/src/main/java/com/festago/festago/data/datasource/userinfo/UserInfoDataSource.kt

@@ -0,0 +1,7 @@
+package com.festago.festago.data.datasource.userinfo
+
+import com.festago.festago.data.model.UserInfoEntity
+
+interface UserInfoDataSource {
+    var userInfo: UserInfoEntity?
+}

android/festago/data/src/main/java/com/festago/festago/data/datasource/userinfo/UserInfoLocalDataSource.kt

@@ -0,0 +1,29 @@
+package com.festago.festago.data.datasource.userinfo
+
+import android.content.Context
+import android.content.SharedPreferences
+import com.festago.festago.data.model.UserInfoEntity
+import com.festago.festago.data.util.getObject
+import com.festago.festago.data.util.putObject
+import dagger.hilt.android.qualifiers.ApplicationContext
+import javax.inject.Inject
+
+class UserInfoLocalDataSource @Inject constructor(
+    @ApplicationContext context: Context,
+) : UserInfoDataSource {
+
+    private val sharedPreference: SharedPreferences by lazy {
+        context.getSharedPreferences(USER_INFO_PREF, Context.MODE_PRIVATE)
+    }
+
+    override var userInfo: UserInfoEntity?
+        get() = sharedPreference.getObject<UserInfoEntity>(USER_ID_KEY, null)
+        set(value) {
+            sharedPreference.putObject<UserInfoEntity>(USER_ID_KEY, value)
+        }
+
+    companion object {
+        private const val USER_INFO_PREF = "user_info_pref"
+        private const val USER_ID_KEY = "user_info_key"
+    }
+}

android/festago/data/src/main/java/com/festago/festago/data/model/UserInfoEntity.kt

@@ -0,0 +1,6 @@
+package com.festago.festago.data.model
+
+data class UserInfoEntity(
+    val nickname: String,
+    val profileImageUrl: String,
+)