Rename model_name and model_name_or_path parameters as model

[bilgeyucel]

Is your feature request related to a problem? Please describe.
As a user, I'd like to have a similar interface for each Generator (possibly for all components accepting a model name) to pass the model name

Describe the solution you'd like
We have discussed that parameters should be named as model but the most important point is to have consistency

Describe alternatives you've considered
Having more documentation around the parameter names can be another solution

Additional context
N/A

[bilgeyucel]

If there's nothing against it, it would be nice to have the same convention for all components including embedders and transcribers

[ZanSara]

Related PRs:

• feat: rename model_name or model_name_or_path to model in generators #6715
• feat!: Rename model_name or model_name_or_path to model in all Embedder classes #6733
• feat!: Rename model_name or model_name_or_path to model in all Transcriber classes #6731
• feat!: Rename model_name_or_path to model in TransformersSimilarityRanker #6734
• feat!: Rename model_name_or_path to model in ExtractiveReader #6736
• feat!: rename model_name_or_path to model in NamedEntityExtractor #6744
• Review the documentation, docstrings, etc

[ZanSara]

For the related work on the integrations, see deepset-ai/haystack-core-integrations#227