Backend api
===
1. All symbols api mock --- [Symol table]
- api format (08/24)
- mock data format (08/24)
- date (09/02)
2. Searching symbols api --- [Search component]
- api format (08/24)
- mock data format (08/24)
- date (09/02)
3. Show specified category's Symbols API mock up --- [Symbol manage]
- api format (08/24)
- mock data format (08/24)
- date (09/02)

4. Others
- row edite/delete/add (not in this stage)
- mass edite/delete/add
- ws (already)