Move PAKE hash parameter to the PAKE algorithm identifier

[athoelke]

This is alternate approach to #116, in response to issue #88.

• Moved the hash algorithm parameter for a PAKE cipher suite into the PAKE algorithm identifier, instead of storing a separate attribute of the cipher suite.
  • Updated the PAKE algorithm encoding
  • Updated the J-PAKE algorithm macro, and added PSA_ALG_IS_JPAKE()
  • Removed the cipher suite accessors for the hash algorithm
• This also makes the hash algorithm value available to the PSA_PAKE_OUTPUT_SIZE() and PSA_PAKE_INPUT_SIZE() macros.

Fixes #88

[athoelke]

Feedback appreciated from @silabs-Kusumit, @silabs-hannes, @oberon-sk, and @yanesca.

[silabs-Kusumit]

I think this is a better solution to #88 than #116.

LGTM