ENH: integrate: integrate.lebedev_rule: points and weights of Lebedev quadrature (scipy#21609)

reviewed at scipy#21609

Author: mdhaber

LICENSES_bundled.txt

@@ -296,3 +296,8 @@ Name: Chebfun
 Files: scipy/interpolate/[_aaa.py, tests/test_aaa.py]
 License 3-Clause BSD
   For details, see scipy/interpolate/_aaa.py
+
+Name: getLebedevSphere
+Files: scipy/integrate/_lebedev.py
+License 2-Clause BSD
+  For details, see scipy/integrate/_lebedev.py

scipy/integrate/__init__.py

@@ -19,6 +19,7 @@
    nquad         -- General purpose N-D integration
    fixed_quad    -- Integrate func(x) using Gaussian quadrature of order n
    newton_cotes  -- Weights and error coefficient for Newton-Cotes integration
+   lebedev_rule
    qmc_quad      -- N-D integration using Quasi-Monte Carlo quadrature
    IntegrationWarning -- Warning on issues during integration
 
@@ -108,6 +109,7 @@
 from ._quad_vec import quad_vec
 from ._tanhsinh import nsum
 from ._cubature import cubature
+from ._lebedev import lebedev_rule
 
 # Deprecated namespaces, to be removed in v2.0.0
 from . import dop, lsoda, vode, odepack, quadpack