feat: add the in-game Quest Journal

[nanopink]

Summary

Following the Quest Helper Discord discussion, this PR integrates Quest Journal directly into Quest Helper as a first-class feature.

It provides a movable and resizable in-game interface for browsing quests, planning requirements, and viewing quest progress.
It complements the existing sidebar, which remains available as the compact active-step interface.

430 automated tests pass with zero failures, verified with personal testing.
99% of the implementation has been isolated under com.questhelper.questjournal.

Preview

Features

• RuneScape themed floating journal with a movable and toggleable quest button beside the minimap
• Quest search and filters, with the ability to bookmark quests using stars
• Browse other quests without interrupting guidance for the active quest
• Collapsible checklists for quest step sections
• Persistent window, filter, scroll, selection, and starred-quest state
• Can replace the original in-game quest journal
• Configurable hotkey for opening or closing the journal
• Safe-area movement, resizing, maximizing, and restoration

The feature is enabled by default, but the journal, launcher, and native-journal replacement can be configured independently.

LOC added

Excluding README and images:

• Quest Helper: 221 lines across 9 files
• Quest Journal: 19,998 lines across 27 files
• Tests: 12,068 lines across 21 files

Performance

• Quest Journal avoids unnecessary quest-data updates while it is closed.
• It uses Quest Helper's existing quest-list state instead of maintaining a second quest database.
• The detailed view for a selected quest is prepared only when needed.
• Relevant game-state changes are read on the client thread and published to the journal as an updated view before it is rendered.
• If a quest cannot be read because of an unavailable class or runtime error, the journal keeps its previous valid view and retries the update with a bounded delay.