Merge branch 'jjlin-api-key' into main

migrations/mysql/2022-01-17-234911_add_api_key/down.sql

migrations/mysql/2022-01-17-234911_add_api_key/up.sql

migrations/postgresql/2022-01-17-234911_add_api_key/down.sql

migrations/postgresql/2022-01-17-234911_add_api_key/up.sql

migrations/sqlite/2022-01-17-234911_add_api_key/down.sql

migrations/sqlite/2022-01-17-234911_add_api_key/up.sql

src/api/core/accounts.rs

src/api/identity.rs

src/crypto.rs

src/db/models/device.rs

src/db/models/user.rs

src/db/schemas/mysql/schema.rs

src/db/schemas/postgresql/schema.rs

src/db/schemas/sqlite/schema.rs