rename ddm model corner

DDM-Corner-Helmholtz-2D/.gitignore

DDM-Corner-Helmholtz-2D/ABC_norm.py

DDM-Corner-Helmholtz-2D/README.md

DDM-Corner-Helmholtz-2D/img/ABC.png

DDM-Corner-Helmholtz-2D/img/TC.png

DDM-Corner-Helmholtz-2D/main.data

DDM-Corner-Helmholtz-2D/main.geo

DDM-Corner-Helmholtz-2D/main.pro

DDM-Corner-Helmholtz-2D/notes.md

DDM-Corner-Helmholtz-2D/src/ABC_DDM.pro

DDM-Corner-Helmholtz-2D/src/ABC_DDM_1.pro

DDM-Corner-Helmholtz-2D/src/ABC_DDM_2.pro

DDM-Corner-Helmholtz-2D/src/ABC_Decomposition.pro

DDM-Corner-Helmholtz-2D/src/ABC_MonoDomain.pro

DDM-Corner-Helmholtz-2D/src/ABC_main.data

DDM-Corner-Helmholtz-2D/src/ABC_main.geo

DDM-Corner-Helmholtz-2D/src/ABC_main.pro

DDM-Corner-Helmholtz-2D/src/Common.pro

DDM-Corner-Helmholtz-2D/src/TC_Decomposition.pro

DDM-Corner-Helmholtz-2D/src/TC_WaveGuide.pro