feat: add Pinia note store

refs #127

src/stores/notes.ts

+import { defineStore } from 'pinia'
+import { steeringAuthInit } from '@/stores/auth'
+
+import {
+  APICreate,
+  APIListPaginated,
+  APIRemove,
+  APIRetrieve,
+  APIUpdate,
+  createExtendableAPI,
+  createSteeringURL,
+} from '@/api'
+
+export type Note = {
+  id: number
+  title: string
+  slug: string
+  summary: string
+  content: string
+  image: number | null
+  cba_id: number | null
+  contributors: number[]
+  links: { type: string; url: string }[]
+  owner: number
+  playlist: string
+  tags: string
+  timeslot: number
+  created_at: string
+  created_by: string
+  updated_at: string
+  updated_by: string
+}
+type ReadonlyAttrs = 'id' | 'created_at' | 'created_by' | 'updated_at' | 'updated_by' | 'owner'
+export type NewNote = Omit<Note, ReadonlyAttrs>
+type NoteCreateData = Omit<Note, ReadonlyAttrs>
+type NoteUpdateData = Partial<Omit<Note, ReadonlyAttrs>>
+
+export function newNote(timeslotID: number): NewNote {
+  return {
+    title: '',
+    slug: '',
+    summary: '',
+    content: '',
+    image: null,
+    cba_id: null,
+    contributors: [],
+    links: [],
+    timeslot: timeslotID,
+    tags: '',
+    playlist: '',
+  }
+}
+
+export const useNoteStore = defineStore('notes', () => {
+  const endpoint = createSteeringURL.prefix('notes')
+  const { base, ...api } = createExtendableAPI<Note>(endpoint, steeringAuthInit)
+  return {
+    ...base,
+    ...APIListPaginated(api),
+    ...APIRetrieve(api),
+    ...APICreate<Note, NoteCreateData>(api),
+    ...APIUpdate<Note, NoteUpdateData>(api),
+    ...APIRemove(api),
+  }
+})