Add `GET /matches?status=active` filter support

[yahia008]

The frontend needs to filter matches by status (active, pending, completed) without fetching all matches.\n\nAcceptance Criteria:\n- Add optional status query param to GET /matches\n- Filter is applied at the database layer\n- Existing GET /events?status=... behaviour is unchanged\n\nFiles: services/event-indexer/src/api.rs, services/event-indexer/src/db.rs

[3m1n3nc3]

@3m1n3nc3 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi, I would love to work on this issue. I have the required experience and skillset to provide the most valuable implementation for this.
Thank you.

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[chinecherem58]

@chinecherem58 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi maintainer I will like to work on this issue

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[Devdave-0x]

@Devdave-0x has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

i can work on this , kindly assign this to me , i have worked on this kind of issue before , i have a very high experience and skills for this

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[grantfox-oss]

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[simplicityf]

@simplicityf has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

I would like to implement this endpoint and also add the filters for it.

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[ubermensh-323]

@ubermensh-323 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

hi team kindly assign me i can work on this issue

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