Cisco-documentation

- Added an option for a local keyring to default to /keyring.json if there are no valid backends. (i.e. ubuntu server default install)
- Updated formatting to black.
- Added generic error handling when collecting information sequentially. Failed collection will skip the device in the results.
- Added option to collect information from a single device. (--switch)
- Fixed run-commands by adding the default-creds options.

- Added rich to the requirements.
- Added option to run sequentially instead of in parallel. (--parallel flag)
- Added function and cli app to help test and save credentials.

- Fixed an over-indentation of the arp table generation causing large files.
- Changed the arp_output.csv to be tab-delimited for easier copy/paste to excel.

- Added better error handling - still writes to output.json if a single connection fails.
- Changed section to support fetching cisco specific information via telnet.

- Added config-merge command.
- Added port-descriptions command.
- Made additional functions to re-use more code.
- Added jinja-merge command for templating switch configurations.

- Updated readme to fix some outdated information.
- Updated the --help to add some context.
- Updated the wireshark_oui.txt file.
- Added an option to update the wireshark_oui.txt file.
- Fixed the get_oui_dict function to return the generated oui_dict.
- Added a step for creation of arp_output.csv output with the arp information.
- Removed aiomultiprocess from requirements.
- Added option to update an excel file directly.