Add example[newton_method]

[linjing-lab]

I add an example constructed with jax.hessian, mainly a reproduction of newton method.

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[linjing-lab]

upload two algorithms which have the nearly same code logic of optimtool.unconstrain.

[linjing-lab]

I add an example of newton_quasi, mainly to implement a portable algorithm of newton_quasi.

[linjing-lab]

Fixed bug of console print while run bfgs_method, bfgs of bfgs_newton and newton of newton_method are separate methods.