feat: adding InferenceType enum

[axel7083]

What does this PR do?

Adding the InferenceType enum, allowing InferenceProvider (see #1161) to precise their type, in this context, it could be llama-cpp, whisper-cpp etc.

Notable change

• Adding new enum InferenceType
• Adding optional backend string property to ModelInfo interface
• Adding optional backend string property to Recipe interface
• adding getByType method to the InferenceProviderRegistry
• InferenceServer will check the backend property of models to select the InferenceProvider
• Improving InferenceProvider constructor

Screenshot / video of UI

N/A no visual change

What issues does this PR fix or reference?

Fixes #1181
Part of #1111

How to test this PR?

• Unit tests has been provided

Side effect

Now, trying to start an InferenceServer with the WhisperModel will raise an error as we do not have any InferenceProvider for it. Same for facebook/detr-resnet-101 model.

ℹ️ This is good, this is what we expect !

[lstocchi]

Overall LGTM

2 things that we should improve (even on separate PRs) are

1. we should add a label displayign the backend in the models table
2. i don't like to see the error " no enabled provider could be found.." when clicking on create service using a non-supported model. I would prefer to not seeing the "create new inference server" button at all. Otherwise i may think that i'm doing something wrong and there is some way to make it work

[axel7083]

Overall LGTM

2 things that we should improve (even on separate PRs) are

1. we should add a label displayign the backend in the models table
2. i don't like to see the error " no enabled provider could be found.." when clicking on create service using a non-supported model. I would prefer to not seeing the "create new inference server" button at all. Otherwise i may think that i'm doing something wrong and there is some way to make it work

Yeah I totally agree, this PR is the first step #1111, we can add more items on their to improve how we deal with this relation

[jeffmaury]

LGTM