Regularised LEMUR simulator for deformation band study

Source code for LEMUR simulator with the reaction-diffusion regularisation. The simulator is developed based on MOOSE environment.用于集成反应扩散正则化（reaction-diffusion regularisation）的LEMUR模拟器（LEMUR simulator）的源代码。该模拟器基于MOOSE环境（MOOSE environment）开发。