IJsselmeer model

[d2hydro]

Notebooks and updates for generating the ijsselmeermodel:

• included layer in generate_model_id to ensure uniqueness
• output type annotaties in code_utils as discussed: Code utils #25 (comment)

linked issues:
#3: organize data
#28: build model

Discussion: https://github.com/Deltares/Ribasim-NL/discussions/27

[d2hydro]

@visr, what do I do wrong here: https://github.com/Deltares/Ribasim-NL/actions/runs/6665005976/job/18113733533?pr=26?

[visr]

src/hydamo/hydamo/code_utils.py:48: error: Missing return statement  [return]
src/hydamo/hydamo/code_utils.py:57: error: Missing return statement  [return]

I see both functions have a return statement only under an if block. I think all possible paths need to be covered by a return statement.

src/hydamo/hydamo/code_utils.py:[6](https://github.com/Deltares/Ribasim-NL/actions/runs/6665005976/job/18113733533?pr=26#step:5:7)1: error: Missing type parameters for generic type "dict"  [type-arg]

I think it just prefers Dict where you can specify the key and value types, so not -> dict but, Dict[str, int] or something like that, with from typing import Dict.