Add Smoke Test for Tabs

[krishpdev]

Relevant Links

Bugzilla: https://bugzilla.mozilla.org/show_bug.cgi?id=1976537
TestRail: 134455

Description of Code / Doc Changes

Leave a bullet-pointed list of changes you made.

Created a test to ensure that middle clicking or pressing control/command and clicking a hyperlink
will correctly create a new background tab. Selenium does not directly support
middle clicking so I used the pynput library to simulate middle clicking. The test
will dynamically determine the location of the hyperlink element so the mouse will correctly
over it before initiating a middle click.

Added control click and middle click functions to page_base.py

Process Changes Required

Mark the relevant boxes:

• Adds a dependency (rerun pipenv install)
• Changes the BasePage
• Changes or creates a BOM/POM (name the object model): _
• Changes CI flow
• Changes scheduled Beta or DevEdition
• Changes Git hooks or Github settings
• Changes L10n harness

Screenshots or Explanations

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Comments or Future Work

Do we need to start another PR soon to address something you saw while working on this?

Workflow Checklist

• Please request reviewers
• If this is an unblocker, please post in Slack.
• If asked to address comments, please resolve conversations.
• If asked to change code, please re-request review from the person who wanted changes.

Thank you!