Deep dive teleprompter rename

[tom-doerr]

I keep getting confused when I search for information on optimizers and can't find it since some sections are still named teleprompters. I just went ahead and refactored the deep dive section. I hope you don't mind!

[arnavsinghvi11]

Hi @tom-doerr , thanks for this change! This has been long overdue but we will also need to do this refactoring within the repository to align with Optimizers overall. @okhat is this a good time to make this transition?

[tom-doerr]

If it's basically just renaming teleprompt to optimize and adding deprecation warnings if someone continues to use teleprompt I could try to add it to the PR

[tom-doerr]

Adding deprecation warnings while keeping it functional seems straightforward.
dspy/teleprompt/teleprompt.py would become:

import warnings
warnings.warn(
    "The 'teleprompt' module has been renamed to 'optimize'. Please update your imports.",
    DeprecationWarning
)
from dspy.optimize.optimize import *

Would be happy to help out with refactoring.

[okhat]

Hmm I think this PR goes a bit farther than it should. The problem is that many teleprompters are definitely not optimizers, e.g. BootstrapFewShotWithRandomSearch is an optimizer but BootstrapFewShot is not.

[tom-doerr]

Ah okay, LabeledFewShot is probably also not an optimizer