docs: New Supported networks page

[louis-md]

Unify all "Supported networks" pages across the site into a better, discoverable design.

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Branch preview

✅ Deployed successfully in branch deployment:

https://supported_networks--docs.review.5afe.dev

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Overall readability score: 36 (🔴 -2.79)

File	Readability
smart-account-bug-bounty.md	53.46 (🟢 +0)
supported-networks.mdx	0 (-)

View detailed metrics

🟢 - Shows an _increase_ in readability 🔴 - Shows a _decrease_ in readability File | Readability | FRE | GF | ARI | CLI | DCRS --- | --- | --- | --- | --- | --- | --- [smart-account-bug-bounty.md](https://github.com/safe-global/safe-docs/blob/fb671559bd808e1b4fb1071339a4340b710a6b50/pages/advanced/smart-account-bug-bounty.md "pages/advanced/smart-account-bug-bounty.md") | 53.46 | 39.53 | 10.78 | 12.4 | 13.45 | 7.56   | 🟢 +0 | 🟢 +0 | 🟢 +0 | 🟢 +0 | 🟢 +0 | 🟢 +0 [supported-networks.mdx](https://github.com/safe-global/safe-docs/blob/fb671559bd808e1b4fb1071339a4340b710a6b50/pages/home/supported-networks.mdx "pages/home/supported-networks.mdx") | 0 | 0 | 19 | 22 | 19 | 11   | - | - | - | - | - | - Averages:   | Readability | FRE | GF | ARI | CLI | DCRS --- | --- | --- | --- | --- | --- | --- Average | 36 | 31.23 | 12.87 | 17.12 | 15.22 | 8.54   | 🔴 -2.79 | 🔴 -3.02 | 🔴 -0.31 | 🔴 -0.55 | 🔴 -0.38 | 🔴 -0.13

View metric targets

Metric | Range | Ideal score --- | --- | --- Flesch Reading Ease | 100 (very easy read) to 0 (extremely difficult read) | 60 Gunning Fog | 6 (very easy read) to 17 (extremely difficult read) | 8 or less Auto. Read. Index | 6 (very easy read) to 14 (extremely difficult read) | 8 or less Coleman Liau Index | 6 (very easy read) to 17 (extremely difficult read) | 8 or less Dale-Chall Readability | 4.9 (very easy read) to 9.9 (extremely difficult read) | 6.9 or less