…#7130)

### Motivation and Context
This PR migrates the `AzureOpenAIAudioToTextService` to Azure.AI.OpenAI
SDK v2.

### Description
1. The existing `OpenAIAudioToTextExecutionSettings` class is copied to
the new `Connectors.AzureOpenAI` project and renamed to
`AzureOpenAIAudioToTextExecutionSettings` to represent prompt execution
settings for the `AzureOpenAIAudioToTextService`.
2. The `OpenAIAudioToTextExecutionSettings.ResponseFormat` property type
has changed from string to the `AudioTranscriptionFormat` enum, which is
a breaking change that is tracked in the issue -
https://github.com/microsoft/semantic-kernel/issues/70533.
3. The `ClientCore.AudioToText.cs` class is refactored to use the new
`AzureOpenAIAudioToTextExecutionSettings` class and to handle the new
type of `OpenAIAudioToTextExecutionSettings.ResponseFormat` property.
4. Service collection and kernel builder extension methods are added to
register the service in the DI container.
5. Unit and integration tests are added as well.

…for format (#7141)

### Motivation and Context

- Updates Execution Settings for `ResponseFormat` from `string` to
`enum`.
- Updates the Unit Tests to validate.

### Motivation, Context, and Description
1. The `ClientCore.DeploymentOrModelName` property is renamed to
`ClientCore.DeploymentName` to reflect it's actual purpose.
2. The `AzureOpenAIPromptExecutionSettings` class is moved to the
`Settings` folder to reside alongside prompt execution setting classes
for other services.

…7148)

### Motivation, Context and Description
This PR:
1. Copies OpenAIFileService and the other classes related to it to the
Connectors.AzureOpenAI project before refactoring them to use the
Azure.AI.OpenAI SDK v2.
2. Renames the classes and changes namespaces accordingly.  
3. Adds/changes no functionality in any of those classes.  
4. Temporarily removes the classes from the compilation process. They
will be included back in the next PR.

---------

Co-authored-by: Roger Barreto <[email protected]>

### Motivation and Context

This PR does the following:  
1. Migrates OpenAIChatCompletionService, ClientCore, and other model
classes both use, to OpenAI SDK v2.
2. Updates ToolCallBehavior classes to return a list of functions and
function choice. This change is required because the new SDK model
requires both of those for the CompletionsOptions class creation and
does not allow setting them after the class is already created, as it
used to allow.
3. Adapts related unit tests to the API changes.
4. Added netstandard2.0 as target for the UnitTest project.
5. Rename `TryGetFunctionAndArguments` to
`TryGetOpenAIFunctionAndArguments` to avoid clashing with AzureOpenAI

### Motivation and Context

- Obsolescence of FileService.

…#7203)

### Motivation and Context

As a way to enforce the Non Breaking principle this PR remove all
avoidable breaking changes from the V2 migration, including additions
and small improvements identified.

### Motivation and Context
It was decided not to migrate existing `OpenAIFileService` to the
Azure.AI.OpenAI SDK v2 and eventually deprecate it.

### Description
This PR removes files related to the `OpenAIFileService` added by a
previous PR.

### Motivation and Context

Removing non existing V1 logging.

### Motivation and Context
This PR aligns metadata names with those provided by the underlying
Azure.AI.OpenAI library. Additionally, it adds a few unit tests to
increase code coverage.

…oft/semantic-kernel into feature-connectors-openai

### Motivation, Context and Description
The new Azure.AI.OpenAI V2 introduced timestamp granularities for the
audio-to-text API. This PR removes the first attempt to expose the
settings in execution settings for the service. The setting will be
introduced later after the migration is over in scope in this task:
#7213.

### Motivation, Context and Description
The unnecessary breaking change that was introduced earlier, which
changed the type of the
`OpenAIAudioToTextExecutionSettings.ResponseFormat` and
`AzureOpenAIAudioToTextExecutionSettings.ResponseFormat` properties, has
been rolled back.