chore: improve subscription page

[ankushKun]

Improved the subscription page design with refined typography, spacing, and visual polish. Enhanced the "Trusted By" section with a more visually appealing layout.

resolves #2140

• Hero section: Increased heading sizes and improved spacing for better visual hierarchy
• Pricing cards: Updated font sizes and weights across Pro, API, and Free cards for consistency
  Price display now uses larger, more prominent typography (text-3xl with font-semibold)
  Standardized feature list spacing with consistent gaps and text sizes
  Enhanced button styling with larger padding and more prominent font weights
• Subscription status: Improved sizing and spacing of status messages and CTAs
• Trusted by section: Replaced grid layout with a dual vertical row layout. Used relative positioning for precise logo alignment to improve visual alignment