feat/add progress bar

[gkapfham]

Adding all of these commits:

• feat: added progress bar functionality in run_checks in output.py
• feat: added run_status_bar and no_status_bar flags for progress bar functionality in main.py
• fix: update run_check argument format and import statements in output.py
• fix: update gatorgrade argument format in main.py
• fix: Remove the ellipse (i.e., "...") from the progress bar label in gatorgrade/output/output.py.
• chore: Remove the blank lines in gatorgrade/output/output.py.
• coms: Delete the commented-out code for generation from the gatorgrade/main.py file.
• fix: Change the name of command-line arguments in gatorgrade/main.py to use dash instead of underscore and simplify names.
• refactor: Rewrite code in gatorgrade/main.py so that it does not use a hard-coded emoji.
• fix: Remove a not-needed newline for output with the failing command in gatorgrade/output/output.py.
• style: Reformat the source code in gatorgrade/output/output.py.

Includes updates from the main branch.

Also includes several improvements to:

• Label for the status bar
• Spacing around the failing command
• The emoji using in the help menu