Fixing eslint errors and warnings for the patientor exercise 9.30

HealthCheckForm completed without react hook form

Forms with success and errors notifications

Completed patientor exercise up to 9.29

Completed patientor exercise up to 9.28

Completed patientor exercise up to 9.27

Completed patientor exercise up to 9.26

Completed patientor exercise up to 9.25

Completed patientor exercise up to 9.24

Completed patientor exercise up to 9.22

Completed flight diaries exercise up to 9.20

Completed flight diaries exercise up to 9.18

Completed react typescript exercise up to 9.16

Completed patientor backend exercise up to 9.14

Completed patientor backend exercise up to 9.13

Completed patientor backend exercise up to 9.11

Completed patientor backend exercise up to 9.9

Completed web exercises up to 9.7

Completed webBMI exercise up to 9.5

Completed Typescript first steps exercise up to 9.3

Completed Typescript first steps exercise up to 9.2

Completed subscriptions exercise up to 8.26

Completed subscriptions exercise up to 8.25

Completed subscriptions exercise up to 8.24

Completed books by genre exercise up to 8.22

Completed books by genre exercise up to 8.20

Completed library database exercise up to 8.14

Completed library frontend exercise up to 8.12

Completed views exercise up to 8.5

Completed views exercise up to 7.21