refactor: rename `ResubscriptionEmote` to `EmoteOccurrence` #291

Job	Run time
Rustfmt	14s
Docs	30s
Clippy	27s
Prettier	6s
Tests (windows-latest)	2m 54s
Tests (windows-latest, nightly)	58s
Tests (ubuntu-latest)	2m 12s
Tests (ubuntu-latest, nightly)	30s
Release	21s
CI	1s
	8m 13s

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