Add a default `handshakeTimeout` value for the SSH profile definition (schema)

[zFernand0]

Is your feature or enhancement request related to a problem or limitation? Please describe

No consistent default value for the handshake timeout options used in SSH operations.

Describe your enhancement idea

Add the default value (e.g. 30 seconds) in the schema definition of the SSH profile

Describe alternatives you've considered

Keep using handshakeTimeout everywhere for consistency

Provide any additional context

Came up during a discussion in this PR:

• Enhanced error message for password lockouts during setup zowe-native-proto#605

[github-actions]

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