Main Column Layout for index.hbs

[mike-diff]

Once a CSS framework is decided here: #6 setup a 2 column layout.
templates/views/index.hbs
Left Side 1/3rd:

• Will have the upload button to upload an STL file
• Will have the stats text divs for the output of the analysis (Model Volume and Overall Size)

Right Side 2/3rds:

• This will be the display area for the 3D Model Preview

Desktop: Columns Side by Side
Mobile: Left Side on Top, Right Side on Bottom. (display: block)