Automate plotting

[sdahdah]

Fixes #73

Proposed Changes

• Implements new functions for quick-and-dirty plots:
  • plot_lifted_trajectory()
  • plot_bode()
  • plot_eigenvalues()
  • plot_koopman_matrix()
  • plot_svd()
  • plot_predicted_trajectory()
  • plot_bode()
  • plot_eigenvalues()
  • plot_koopman_matrix()
  • plot_svd()
• Allows predict_trajectory() to be called with initial condition X0 and input U, or a full data matrix X.

[sdahdah]

Thank you @LouisLortie