Add Cloud Poem to README.md

[Copilot]

Changes Made

Added a new section titled "Cloud Poem" at the end of the README.md file with an original poem about clouds called "Whispers in the Sky". The poem consists of four stanzas that describe various aspects of clouds including:

• Their appearance and formations
• Different cloud types (cirrus, cumulus, nimbus)
• Their movement patterns and interactions with light
• Their ethereal and ever-changing nature

The Poem

### Whispers in the Sky

Billowing giants in endless blue,
Cotton castles drifting through,
Sunlight dancing on edges white,
Transforming, shifting, day and night.

Cirrus wisps like painted strokes,
Cumulus puffs in scattered cloaks,
Nimbus bearers of rain and storm,
Ever-changing in shape and form.

Some days they race across the sky,
Other times, they barely sigh,
Nature's canvas above our heads,
From dawn's first light till day has fled.

Silent travelers on winds unseen,
Between the earth and heaven's sheen,
Clouds—ephemeral works of art,
In the atmosphere's endless chart.

Fixes #15.