feat: updated filters for campaigns discovery

[Dzeranov]

Issue tracking

To close #834

Context behind the change

• updated filters for campaigns discovery
• bumped @hu-fi/subgraph-sdk

How has this been tested?

• deployed locally

Release plan

Regular release

Potential risks; What to monitor; Rollback plan

N/A

[Copilot]

Pull request overview

This PR updates the Campaign Launcher server’s campaign discovery endpoint to support additional filtering (by campaign type and exchange) and aligns the subgraph client dependency with the required schema/fields.

Changes:

• Add type and exchange filters to the campaigns discovery API (controller → service → subgraph query).
• Extend campaign response data with cancellationRequestedAt.
• Bump @hu-fi/subgraph-sdk to 3.0.0-beta.4.

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
campaign-launcher/server/src/modules/campaigns/campaigns.dto.ts	Adds new query params (type, exchange) and adds cancellationRequestedAt to the campaign DTO.
campaign-launcher/server/src/modules/campaigns/campaigns.controller.ts	Wires new query params into the service filter object.
campaign-launcher/server/src/modules/campaigns/campaigns.service.ts	Passes new type_in / exchange_in filters to the subgraph and maps cancellationRequestedAt.
campaign-launcher/server/package.json	Updates @hu-fi/subgraph-sdk dependency version.
campaign-launcher/server/yarn.lock	Locks updated @hu-fi/subgraph-sdk resolution/checksum.

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