4 database schema and migration

[SamNie2027]

ℹ️ Issue

Closes Database schema & migration #4

📝 Description

Created Donation TypeORM according to acceptance criteria

Added files:
apps/backend/src/donations/donation.entity.ts
apps/backend/src/migrations/1758917198934-add_donations.ts

Changed files:
apps/backend/src/data-source.ts

✔️ Verification

Tested:

yarn docker:up:dev -> leads to (in postgres cli)
fcc_dev=# \dt
List of relations
Schema | Name | Type | Owner
--------+------------+-------+----------
public | migrations | table | postgres
(1 row)

yarn docker:migrate:dev -> leads to (in postgres cli)
fcc_dev=# \dt
List of relations
Schema | Name | Type | Owner
--------+------------+-------+----------
public | donations | table | postgres
public | migrations | table | postgres
public | users | table | postgres
(3 rows)

yarn docker:migrate:revert -> leads to (in postgres cli)
fcc_dev=# \dt
List of relations
Schema | Name | Type | Owner
--------+------------+-------+----------
public | migrations | table | postgres
(1 row)

Also the table schema in postgres cli:

🏕️ (Optional) Future Work / Notes

Users and Donations table are being migrated together through this implementation: Is this fine or is this not good practice?