payer attr not generated for init of spl accounts

[julianzamt]

Describe the bug
When generating code for a ix that use a spl account marked as init, the generated code doesn't include the mandatory payer attribute.

To Reproduce

 - name: mint
    uses:
      - csl_spl_token.initialize_mint2
      - csl_spl_assoc_token.create
      - csl_spl_token.mint_to
      - csl_spl_token.set_authority
    inputs:
      - name: mint
        type: csl_spl_token.Mint
        solana:
          attributes: [ init ]
...

Generated code:

Expected behavior
To use the feePayer as rent-payer if not specified, or the designed rent-payer if present.

Platform version:

• CLI Version [e.g. v0.1.0]
• GenService Version v0.8

Extension (mark with an X the extension):

• Solana Native [ ]
• Solana Anchor [x]

Additional context
Add any other context about the problem here.

[JazielGuerrero]

Related to/Duplicate of: #33