Enhancing the Console.

[shreyas2000]

issue #76
Some tasks done:

1. Logging errors to console
2. Dark theme used
3. Shifted to pyqt5

console without errors

console with erros

! Currently Try/catch blocks are used only in main.py for testing purposes they need are to implemented else where in application like individual blocks,wires, utils .py files and errors can be logged from there by simply importing logger from main.py.

Some things to be handled:

1. Programs continues to run even after encountering errors.
2. Restart and Stop button for console.

[muhammadtahasuhail]

Let's merge this pull request once the quit button is implemented as it is necessary to exit the application.

[shreyas2000]

Let's merge this pull request once the quit button is implemented as it is necessary to exit the application.

Done