[FEATURE] Implement default test / user cases

[HiceS]

Is your feature request related to a problem? Please describe.
We need to implement the default test and user cases and link the executable build to the library package,

Describe the solution you'd like
Develop additional main.rs tests that use the writable object to test a base case,

1. Incorrect or Malformed escape sequences
2. Malformed strings with early termination

Develop a new module that possibly reads and forms these strings.