[Editor] User is able to create project with illegal character

[Shepardeon]

Describe the bug
Currently, the project name isn't fully filtered and a user can use illegal character like '/' or '' which can lead to unexpected behavior down the line.

To Reproduce
Steps to reproduce the behavior:

1. Go to "File > New Project"
2. Enter a name such as test\test
3. Click on "Create New project"
4. The name of the project is now "test\test" but OS created 2 directories "test"

Expected behavior
User shouldn't be able to use illegal character to name their project or they should be filtered out before creating the files.

Desktop (please complete the following information):

• OS: Windows
• Version: 10