refactor: make match-collector export its types, and consume them in frontend

frontend/components/matchup/Section.vue

@@ -2,6 +2,8 @@
 import { CDRAGON_BASE } from '~/utils/cdragon'
 import MatchupSpectrum from './Spectrum.vue'
 
+import type { MatchupData } from 'match_collector'
+
 defineProps<{
   matchups?: Array<MatchupData>
   championId: number

frontend/components/matchup/Spectrum.vue

@@ -2,6 +2,8 @@
 import { ref } from 'vue'
 import { CDRAGON_BASE } from '~/utils/cdragon'
 
+import type { MatchupData } from 'match_collector'
+
 defineProps<{
   matchups?: Array<MatchupData>
   championId: number