Add new `reader` classes

[antrikshmisri]

Is your feature request related to a problem? Please describe.
Currently, checkpoint can read text files and image files. These files are read by reader classes, documentation can be found here. In order to make checkpoint compatible with other file type a reader for that specific extension group needs to be added to readers module. Some of the readers that can be added:-

• BinaryReader
• AudioReader
• VideoReader

Describe the solution you'd like
Add more reader classes to the readers module.

[alceil]

Can I work on this issue @antrikshmisri