/issue command can only fetch from a github user

[wesdevpro]

Problem: The JARVIS bot issue command can not fetch ntohq-developers repository issues

Solution: Add flags to specify whether a team member wants to get repository issues from a user or organization.

Examples:
/issue -o <organization> <reponame> -> Gets a organization's repository issue(s) and shares the issues to the slack server
/issue -u <username> <reponame> -> Gets a user's repository issue(s) and shares the issues to the slack server
/issue -h -> Responds to users with examples on how to use /issue command

To do

• Update command.js to now clean flags
  -> all flags need to be lowercased
  -> flags can be found at index 0
  -> represent each flag with a single character.
  -> Example: 'o', 'u'
  -> returned data example -> [ 'o', 'ntohq-developers', 'analyst' ]
• Create a getUsersRepoIssues and getOrgsRepoIssue
  -> Returns a list of issues fetched from github rest api
• Add github.js issueCommand function contains all if statements to manipulate the array of flags
  -> async function requires the command to run and returns the slack bot block to send back to the server
  -> task:
  1.Call getOrgs... or getUsers..
  2. Call and return createIssueBlock