Add unique index migration (#34)

* add migration to delete duplicates that currently exist in the db

* change model and migration to add a unique index constraint to id and name

* renamed unique index name to be readable

* redid model and migration to use @Unique instead of @Index

* remove //Here comment

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Co-authored-by: Aster Fialla <asterfialla@gmail.com>

database/entity/Member.ts

@@ -1,6 +1,7 @@
-import {Entity, PrimaryGeneratedColumn, Column, CreateDateColumn, UpdateDateColumn} from "typeorm"
+import {Entity, PrimaryGeneratedColumn, Column, CreateDateColumn, UpdateDateColumn, Unique} from "typeorm"
 
 @Entity({name: "Member", synchronize: true})
+@Unique("UQ_Member_userid_name", ['userid', 'name'])
 export class Member {
 
     @PrimaryGeneratedColumn()