Classical-doa

fix bugs in root-music

DOA estimation algorithms for Uniform Linear Array (ULA) and Uniform Circular Array (UCA) are fully implemented. Also, two different plotting functions are provided to visualize the spatial spectrum and the directly estimated values.

* Added L1-SVD algorithm for DOA estimation of ULA.
* Changed the API of the plotting functions.
* Changed the array information API for the algorithms.

* Add Uniform Circular Array
* Add UCA-RB-MUSIC and UCA-ESPRIT for UCA DOA Estimation

* Add `steering_vector()` method in array
* Fix bug in CSSM algorithm in which time delay is calculated with theta instead of sin(theta)
* Set axis‘ ticks in `plot_estimated_value()`

All comments are now in English.

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