update switch system & add receiver particles
add selection mode feature + activate snap system + clean project
Merge branch 'Graph2' into Graph

Conflicts:
	Assets/Resources/Materials/Environment/Other/mat_diffuse_green.mat
	Assets/Resources/Materials/Environment/Other/mat_diffuse_green.mat.meta
	Assets/Resources/Materials/Environment/Other/mat_diffuse_orange.mat
	Assets/Resources/Materials/Environment/Other/mat_diffuse_orange.mat.meta
	Assets/Resources/Materials/Environment/Other/mat_diffuse_pink.mat
	Assets/Resources/Materials/Environment/Other/mat_diffuse_pink.mat.meta
	Assets/Resources/Materials/Environment/Other/mat_diffuse_yellow.mat
	Assets/Resources/Materials/Environment/Other/mat_diffuse_yellow.mat.meta
	Assets/Resources/Prefabs/Necessary/__system.prefab
	Assets/Scenes/Graphics/graphics-cube.unity
	Assets/Scenes/Graphics/graphics-cube.unity.meta