Add ThrowEndOfStreamException and ThrowHttpRequestException to ThrowHelpers

### Overview

ThrowHelpers does not have methods to throw EndOfStreamException or HttpRequestException so I think they should be added.

### API breakdown

```csharp
[DoesNotReturn]
public static void ThrowEndOfStreamException()
{
throw new EndOfStreamException();
}
```
```csharp
[DoesNotReturn]
public static void ThrowHttpRequestException()
{
throw new HttpRequestException();
}
```
And all the other overloads and generic verisons.

### Usage example

```csharp
int read = stream.Read(buffer);
if (read == 0)
{
ThrowHelpers.ThrowEndOfStreamException();
}
```

```csharp
HttpResponseMessage response = ... ;
if (response.StatusCode != HttpStatusCode.PartialContent)
{
ThrowHelpers.ThrowHttpRequestException($"Response body status code was expected to be {HttpStatusCode.PartialContent} but was {response.StatusCode} instead.");
}
```

### Breaking change?

No

### Alternatives

The alternative would be to write these functions manually in any project they would need to be used in.

### Additional context

_No response_

### Help us help you

Yes, I'd like to be assigned to work on this item