Add 'git jira' command

[salcode]

Since we follow the branch naming scheme {type}/{jira Issue}-{description} when naming branches related to Jira issues, we should be able to use a regular expression to extract the Jira issue and open this issue in the browser.

Example branch names

• feature/sf-123-add-new-button
• bug/tmnt-987-remove-infinite-loop
• chore/sf-456-remove-copyright-infringement-in-example

Jira Subdomain

Since Jira issues can exist in different Jira instances, the subdomains associated with the ticket may be different.

e.g.

• https://ferrarello.atlassian.net/browse/sf-123
• https://mirage.atlassian.net/browse/tmnt-987-remove-infinite-loop
• https://ferrarello.atlassian.net/browse/chore/sf-456

To handle this, we can create a Git config value (salcode.jiraSubdomain ).

By using a Git config value, we can set a global value but then override it for specific directories or projects.

e.g. in the Global .gitconfig

[salcode]
	jiraSubdomain = ferrarello

but then in we could have a local .gitconfig that sets

[salcode]
	jiraSubdomain = mirage

The global value could be set on the command line with the following (where ferrarello is the subdomain to be used globally).

git config --global salcode.jiraSubdomain ferrarello