Add content for point lights (#6649)

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+# Point Lights
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+Point lights are one of the most common types of lights used in computer graphics and games. They resemble real-world light bulbs, emitting light uniformly in all directions.
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+These lights are available out of the box in most game engines and offer a range of customizable parameters, such as intensity, falloff, color, and more.
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+Point lights are the most straightforward type of light, making them ideal for quickly and intuitively lighting up your scenes.