Please consider adding rotateX, rotateY and rotateZ methods to the cq.Vector Class

Being able to do vector transformations is a basic generic capability. Possibly something like the following:
```python
def rotateX(self, angle: float):
return cq.Matrix().rotateX(angle).multiply(self)

def rotateY(self, angle: float):
return cq.Matrix().rotateY(angle).multiply(self)

def rotateZ(self, angle: float):
return cq.Matrix().rotateZ(angle).multiply(self)
```
Note that cq.Matrix() rotate methods (on master) assume the provided angle is in radians not degrees like the other cadquery methods.