feat: Add item and block search by active NEI query (Alt+T & Alt+Y)

[soran57]

Adds the ability to search for items in containers and blocks in the world using the active NEI search bar query.

Alt + T - highlights inventory slots containing items matching the NEI search query.
Alt + Y - highlights blocks in the world matching the NEI search query.
NBT tags are stripped on the client for all items except Thaumcraft aspect items to keep packets small and de-duplicate tool variants (Tinkers'/GregTech). GregTech tile entities are matched using getMetaTileID(). Up to 1000 unique keys per query.

[Copilot]

Pull request overview

This PR adds a new “search by active NEI query” mode for both item-in-container highlighting and block-in-world highlighting, triggered via Alt+T and Alt+Y respectively, by sending precomputed sets of matching item/block keys over the network.

Changes:

• Extended item/block request/response network messages to support “search by name” via sets of lightweight keys.
• Added client tick listeners that read the active NEI search filter, build up to ~1000 matching keys, and send them to the server.
• Updated matching logic on server/provider side to support the new request mode (including special handling for Thaumcraft aspect items).

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 13 comments.

Show a summary per file

File	Description
src/main/java/com/gtnh/findit/service/itemfinder/ItemFoundResponse.java	Adds name-search payload serialization for item results.
src/main/java/com/gtnh/findit/service/itemfinder/ItemFindService.java	Sends the richer response based on the full request.
src/main/java/com/gtnh/findit/service/itemfinder/FindItemRequest.java	Adds name-search request mode, key serialization, and matching helper.
src/main/java/com/gtnh/findit/service/itemfinder/ClientItemFindService.java	Adds Alt+T NEI-query extraction and request sending; integrates response handling.
src/main/java/com/gtnh/findit/service/blockfinder/FindBlockRequest.java	Adds name-search request mode and key serialization for blocks.
src/main/java/com/gtnh/findit/service/blockfinder/ClientBlockFindService.java	Adds Alt+Y NEI-query extraction and request sending.
src/main/java/com/gtnh/findit/service/blockfinder/BlockFindService.java	Updates server-side matching to support name-search requests.
src/main/java/com/gtnh/findit/handler/ThaumcraftProvider.java	Adds name-search matching support for Thaumcraft aspect containers.
src/main/java/com/gtnh/findit/handler/MinecraftProvider.java	Updates default stack matching to use key-based matching in name-search mode.

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