Rename main folders and write sql backend adaptor

crabfit-frontend/src/stores/recentsStore.js

@@ -1,23 +0,0 @@
-import create from 'zustand'
-import { persist } from 'zustand/middleware'
-
-const useRecentsStore = create(persist(
-  set => ({
-    recents: [],
-
-    addRecent: event => set(state => {
-      const recents = state.recents.filter(e => e.id !== event.id)
-      recents.unshift(event)
-      recents.length = Math.min(recents.length, 5)
-      return { recents }
-    }),
-    removeRecent: id => set(state => {
-      const recents = state.recents.filter(e => e.id !== id)
-      return { recents }
-    }),
-    clearRecents: () => set({ recents: [] }),
-  }),
-  { name: 'crabfit-recent' },
-))
-
-export default useRecentsStore