feat: add api remove event

[quangtuanitmo18]

Add api to remove event from project

[Copilot]

Pull request overview

Adds a new GraphQL mutation to remove an event from a project, along with related stored event data in MongoDB.

Changes:

• Extend the GraphQL schema with a removeEvent(projectId, eventId): Boolean! mutation guarded by @requireUserInWorkspace.
• Add the removeEvent resolver wiring to call into the events model layer.
• Implement EventsFactory.removeEvent() to delete the original event plus related repetitions and daily event records.
• Bump package version to 1.4.8.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
src/typeDefs/event.ts	Adds the removeEvent mutation to the GraphQL schema.
src/resolvers/event.js	Implements the GraphQL resolver for removeEvent.
src/models/eventsFactory.js	Implements MongoDB deletions for event + related collections.
package.json	Version bump to reflect the new API feature.

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