Added gitignore

On branch main
Your branch is up to date with 'origin/main'.

Changes to be committed:
	new file:   .gitignore

Changes not staged for commit:
	modified:   release/main.exe
	modified:   src/exec/main.exe
	modified:   src/exec/main.ilk
	modified:   src/exec/main.pdb
	modified:   src/exec/vc140.pdb
	modified:   src/main.cpp
	modified:   src/obj/grid.obj
	modified:   src/obj/main.obj
	modified:   src/obj/randoms.obj
	modified:   src/obj/utils.obj

Author: Akhand-Pratap-Tiwari

.gitignore

@@ -0,0 +1,2 @@
+*.obj
+*.pdb