ref(teamwork): Shadow deprecate teamwork plugin

[leeandher]

This PR shadow deprecates the teamwork plugin, preventing those without the organization feature from viewing, updating or using the plugin. The feature is organizations:integrations-ignore-teamwork-deprecation and will be removed after the full deprecation has been done.

With the feature enabled:

• Issue linking is still visible:

• still available in the plugin list
• still displayed when installed on the sidebar
• still available in the integration directory (regardless of installation)

visible.in.plugin.integration.pages.mov

• still available with a direct link to the plugin (settings/:orgId/plugins/teamwork/)

---

Without the feature enabled

• Issue linking disappears

• None of the plugin pages show teamwork
• Individual view throws a 404 (we don't handle it well so it errors, but that is out of scope of this ticket)

not.on.plugin.pages.mov

• No longer on the integration directory (regardless of whether or not it is installed)

Not.in.integration.directory.mov

• Direct link throws 404 (we don't handle it well so it errors, but that is out of scope of this ticket)

direct.link.returns.404.mov