feat(databars): add Lockout Details toggle with live instance sync

[kylelemons]

What does this PR do?

Adds an opt-in Lockout Details toggle (lockoutDetails) to the Clock databar block settings (Data Bars > Bar > Blocks > Clock).

When enabled, the clock tooltip displays difficulty abbreviations and boss kill progress for saved raid/instance lockouts (e.g. Liberation of Undermine (H 4/8), Tidebound Grotto (W 1/1), Nerub-ar Palace (M 8/8)).

Key highlights:

• Zero Cost / Opt-In: Setting defaults to false. When disabled, the clock tooltip retains its standard name-only layout and registers no additional instance events.
• Live Sync: Automatically queries RequestRaidInfo() on tooltip hover and upon encounter completions (BOSS_KILL / ENCOUNTER_END).
• Live Tooltip Update: Listens to UPDATE_INSTANCE_INFO while hovering so the tooltip updates dynamically without requiring the user to re-hover.
• Compact Difficulty Alignment: Shortens difficulty names to standard abbreviations (M, H, N, LFR, TW, W, DLV, Story) for clean vertical alignment.

How was it tested?

• Tested on retail client build 12.1.0.69587.
• Verified toggle appears in Clock block settings and toggles dynamically.
• Tested killing raid bosses mid-session; confirmed instance progress updates immediately upon kill and hover.
• Tested World (Tidebound Grotto) and Delve instances.
• Verified .tools/extract-locale-keys.sh passes with 0 diff.

Screenshots

Settings	Live

Checklist

• New settings default OFF (no behavior change without opt-in)
• Zero cost while disabled: no events registered, no polling, no hooks doing work, no frames built
• Cheap while enabled: event-driven (no polling, no timer-based logic, no per-frame allocations)
• No writes onto Blizzard-owned frames (weak-table pattern used); HookScript/hooksecurefunc only, never SetScript on Blizzard frames
• Tested in-game on live; no version gates or pre-Midnight APIs added