feat(sponsors): add sponsors from different years

Add sponsors page that is rendered as markdown which displays sponsors
from different years and on home page remain with sponsors of the
previous pycon

Signed-off-by: Rodney Osodo <socials@rodneyosodo.com>

Author: rodneyosodo

public/sponsors/at.png

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+import Image from "next/image";
+import { sponsors } from "@/lib/constants";
+
+export default function Sponsors() {
+  const years = [...new Set(sponsors.flatMap((sponsor) => sponsor.year))]
+    .map(Number)
+    .sort((a, b) => b - a);
+
+  return (
+    <div className="py-12 lg:py-20 relative overflow-hidden">
+      <div className="max-w-2xl mx-auto pb-20">
+        <div className="grid gap-12">
+          <div>
+            <h1 className="text-3xl font-bold lg:text-4xl text-center">
+              Previous Sponsors
+            </h1>
+          </div>
+        </div>
+      </div>
+
+      {years.map((year) => (
+        <div key={year} className="max-w-6xl mx-auto mb-16 border-b-2 pb-8">
+          <h2 className="text-2xl font-bold mb-8 text-center">{year}</h2>
+          <div className="grid sm:grid-cols-2 lg:grid-cols-4 items-center gap-12">
+            {sponsors
+              .filter((sponsor) => sponsor.year.includes(year.toString()))
+              .map((sponsor) => (
+                <div key={`${sponsor.title}-${year}`} className="text-center">
+                  <div className="flex justify-center items-center w-24 h-24 mx-auto">
+                    <a href={sponsor.url} target="_blank" rel="noreferrer">
+                      <Image
+                        src={sponsor.image}
+                        alt={sponsor.title}
+                        width={120}
+                        height={120}
+                        className="w-24 h-24 object-contain"
+                      />
+                    </a>
+                  </div>
+                  <div className="mt-3">
+                    <h3 className="text-lg font-semibold">
+                      <a href={sponsor.url} target="_blank" rel="noreferrer">
+                        {sponsor.title}
+                      </a>
+                    </h3>
+                  </div>
+                </div>
+              ))}
+          </div>
+        </div>
+      ))}
+    </div>
+  );
+}

public/sponsors/google.png

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+---
+title: Sponsors
+---
+
+## Become a Sponsor of PyCon KE
+
+Join us in shaping the future of Python in Kenya! PyCon KE brings together developers, engineers, and tech enthusiasts from across East Africa for an unforgettable celebration of Python programming.
+
+## Why Sponsor PyCon KE?
+
+- Connect with Top Talent: Engage directly with hundreds of passionate Python developers, from beginners to experts
+- Build Brand Awareness: Showcase your company to a highly engaged technical audience in the growing East African tech ecosystem
+- Support the Community: Help foster the growth of Python programming in Kenya and contribute to technological advancement in the region
+- Recruitment Opportunities: Meet potential candidates face-to-face in a dynamic, technology-focused environment
+
+## Our Impact
+
+- Over 500+ attendees expected
+- 30+ technical talks and workshops
+- Participants from across East Africa
+- Strong representation from major tech companies and startups
+- Extensive social media and press coverage
+
+## Sponsorship Tiers
+
+### Diamond Tier (KSH 800,000)
+
+- Premium booth placement
+- Keynote speaking opportunity
+- 5 Speaking slot
+- Company logo on all conference materials
+- Social media promotion
+- 20 conference tickets
+- Access to attendee resume database
+
+### Gold Tier (KSH 500,000)
+
+- Exhibition booth
+- 3 Speaking slot
+- Company logo on website and materials
+- Social media mentions
+- 6 conference tickets
+
+### Silver Tier (KSH 250,000)
+
+- 2 Speaking slot
+- Company logo on website and materials
+- Social media mention
+- 4 conference tickets
+
+### Bronze Tier (KSH 100,000)
+
+- 1 Speaking slot
+- Company logo on website and materials
+- Social media mentions
+- 2 conference tickets
+
+## Get Involved
+
+Join companies that are leading the way in supporting the Python community in Kenya. Contact us at [info@pyconke.org](mailto:info@pyconke.org) to discuss sponsorship opportunities and customize a package that meets your organization's goals.
+Together, let's make PyCon KE an unforgettable experience for the Python community!
+
+<Sponsors />