feat(language): add tooltip support with configurable tooltip-format

[yihangwu539-png]

Description

Adds tooltip support to the hyprland/language module. When tooltip is enabled (default), the tooltip displays the keyboard layout information using tooltip-format config option, with the same format replacements as the format option.

Config Example

"hyprland/language": {
    "format": "{short}",
    "tooltip": true,
    "tooltip-format": "Layout: {long}"
}

When tooltip-format is not specified, it defaults to {long} (the full layout name).

Available format replacements:

• {long} — Full layout description (e.g., "English (US, intl., with dead keys)")
• {short} — Short layout name (e.g., "us")
• {shortDescription} — Brief layout description (e.g., "en")
• {variant} — Layout variant (e.g., "intl")

Changes

• src/modules/hyprland/language.cpp — Added tooltip text setting using label_.set_tooltip_text() with configurable tooltip-format
• include/modules/hyprland/language.hpp — No changes needed (Layout struct already has all fields)

Closes #3693