Essential free plan cancelation banner

[gaspergrom]

Changes proposed ✍️

What

🤖[deprecated] Generated by Copilot at 5f6fda4

This pull request adds a new banner component to the frontend layout that encourages free and essential plan users to upgrade their workspace. It also adds a new Vuex getter to determine when to show the banner based on the plan and the expiration date.
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🤖[deprecated] Generated by Copilot at 5f6fda4

Sing, O Muse, of the cunning coder who devised
A banner bright and bold, to urge the free and frugal
To upgrade their workspace, lest they lose their precious data
And wander in the dark, like the shades of Erebus.

Why

How

🤖[deprecated] Generated by Copilot at 5f6fda4

• Add a banner component to the main layout template to inform free plan users of the upcoming end of the plan (link, link)
• Import the Plans module to the tenant module getters to access the plan constants and values (link)
• Define a new getter showUpgradeEssentialBanner in the tenant module to check the current tenant's plan and date against the limit date of January 1st, 2024 (link)
• Include the showUpgradeEssentialBanner getter in the showBanner getter logic to conditionally render the banner component in the layout.vue file (link)

Checklist ✅

• Label appropriately with Feature, Improvement, or Bug.
• Add screenshots to the PR description for relevant FE changes
• New backend functionality has been unit-tested.
• API documentation has been updated (if necessary) (see docs on API documentation).
• Quality standards are met.