Improve error messages for MySQL source

Improve error messages for the MySQL source! Some baselines:
- 51% of users abandon setup after trying to test (give up rate)
- 73% of users hit at least 1 failure when trying to test
- Test success rate after a failure is 50%

### Error type: Request timed out due to HikariPool (24% of errors)
> Message: HikariPool-1 - Connection is not available, request timed out after 60001ms.

Suggestion: show the same guidance implemented here: https://github.com/airbytehq/airbyte/issues/25889

### Error type: Network error (15% of errrors)
> State code: 08S01; Message: Communications link failure. The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.

Open question - which could this relate to?
Option 1: show the same guidance implemented here: https://github.com/airbytehq/airbyte/issues/25889
Option 2: Too many sockets open (is this an Airbyte-controlled error?)
Option 3: Incorrect Unix socket file name or TCP/IP port number when trying to connect to the server. Also check that the TCP/IP port you are using has not been blocked by a firewall or port blocking service.

### Error type: Security configuration invalid (9%)
> Unsecured connection not allowed. If no SSH Tunnel set up, please use one of the following SSL modes: required, verify-ca, verify-identity

Suggestion: Default the SSL mode to "required" on the form.

### Error type: Malformed database URL (9%)
> State code: 08001; Message: Cannot load connection class because of underlying exception: com.mysql.cj.exceptions.WrongArgumentException: Malformed database URL, failed to parse the main URL sections.
> State code: 08001; Message: Cannot load connection class because of underlying exception: com.mysql.cj.exceptions.WrongArgumentException: Malformed database URL, failed to parse the connection string near ':mysql://{x}/{x}?user={x}&password={x}&sslMode=REQUIRED'.

Open question - which could this relate to?
Option 1: Database name is entered incorrectly / no such database exists. User needs to fix the entered configuration.
Option 2: MySQL JDBC jar file version does not match the MySQL database server version

### Error type: Access denied (8%)
> State code: 28000; Error code: 1045; Message: Access denied for user '{x}'@'{x}' (using password: YES)
> State code: 28000; Error code: 1045; Message: Access denied for user '{x}'@'{x} (using password: NO)

Open question - which could this relate to?
Option 1: Don't use a no-password, anonymous user for authentication
Option 2: Check your password (if using password). Otherwise, check your user has access to the database.

### Error type: SSH configuration doesn't work (5%)
> Could not connect with provided SSH configuration. Error: Timed out while opening a SSH Tunnel. Please double check the given SSH configurations and try again.

Open question: is there any recommendation to offer here other than to check the configuration? Is there anything we can log differently to gather more information?

### Error Type: SSL connection required: (5%)
> State code: 08001; Message: SSL Connection required, but not provided by server.

Suggestion: Failed to find a valid SSL configuration. Ensure your database is set up with SSL.

### Error Type: SshException: No more authentication methods available (3%)
> Could not connect with provided SSH configuration. Error: org.apache.sshd.common.SshException: No more authentication methods available

Open question: What does this mean?

### Error Type: 42000 Unknown Database 1049 (2%)
> State code: 42000; Error code: 1049; Message: Unknown database '{X}'

Suggestion: Failed to find database {x}. Verify the database you entered exists and the user has permission to access.

Anything with <=5 errors I skipped and did not include here, but can be seen here: https://docs.google.com/spreadsheets/d/1q9cybppuoWl7rgAdMOi3oxyazcnEkvcZZ4RiftDAbaY/edit?pli=1#gid=767914303

cc @prateekmukhedkar