feat: Add option to directly open character in RisuRealm preview

[SameDesu123]

PR Checklist

• Have you checked if it works normally in all models? Ignore this if it doesn't use models.
• Have you checked if it works normally in all web, local, and node hosted versions? If it doesn't, have you blocked it in those versions?
• Have you added type definitions?

Description

This PR implements a new advanced setting, "Directly open character in RisuRealm" (realmDirectOpen).

Features

• Direct Access: When enabled, clicking a character in the preview directly opens the character's description popup, bypassing the full RisuRealm list view.
• Multilingual Support: Added translation keys for the setting's label and description in all supported languages (en, ko, cn, de, es, vi, zh-Hant).

Implementation Details

• Added realmDirectOpen to Database interface in src/ts/storage/database.svelte.ts.
• Created a new store RealmInitialOpenChar in src/ts/stores.svelte.ts to pass character data from MainMenu to RealmMain.
• Updated MainMenu.svelte to conditionally set the store based on the setting.
• Updated RealmMain.svelte to reactively open the character popup when the store is populated.