feat: remember-me validity can be configured using duration notation

you can use configurations like:
- '30d' for 30 days
- '24h' for 24 hours

komga/src/main/kotlin/org/gotson/komga/infrastructure/configuration/KomgaProperties.kt

@@ -42,8 +42,8 @@ class KomgaProperties {
     @get:NotBlank
     var key: String? = null
 
-    @get:Positive
-    var validity: Int = 1209600 // 2 weeks
+    @DurationUnit(ChronoUnit.SECONDS)
+    var validity: Duration = Duration.ofDays(14)
   }
 
   class Cors {

komga/src/main/kotlin/org/gotson/komga/infrastructure/security/SecurityConfiguration.kt

@@ -103,13 +103,13 @@ class SecurityConfiguration(
     }
 
     if (!komgaProperties.rememberMe.key.isNullOrBlank()) {
-      logger.info { "RememberMe is active, validity: ${komgaProperties.rememberMe.validity}s" }
+      logger.info { "RememberMe is active, validity: ${komgaProperties.rememberMe.validity}" }
 
       http
         .rememberMe {
           it.rememberMeServices(
             TokenBasedRememberMeServices(komgaProperties.rememberMe.key, komgaUserDetailsLifecycle).apply {
-              setTokenValiditySeconds(komgaProperties.rememberMe.validity)
+              setTokenValiditySeconds(komgaProperties.rememberMe.validity.seconds.toInt())
               setAlwaysRemember(true)
               setAuthenticationDetailsSource(userAgentWebAuthenticationDetailsSource)
             }

komga/src/main/resources/application-dev.yml

@@ -1,7 +1,7 @@
 komga:
   remember-me:
     key: changeMe!
-    validity: 2592000 # 1 month
+    validity: 30d
 #  libraries-scan-cron: "*/5 * * * * ?" #every 5 seconds
   libraries-scan-cron: "-" #disable
   libraries-scan-startup: false