Add Hemi support.

Signed-off-by: bgravenorst <byron.gravenorst@consensys.net>

Author: bgravenorst

services/reference/_partials/_optimism_outputatblock-description.mdx

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+Returns the output root at a specific block. This method retrieves the L2 output root hash for the specified block number.

services/reference/_partials/_optimism_outputatblock-example.mdx

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+Replace `<YOUR-API-KEY>` with an API key from your [MetaMask Developer dashboard](https://developer.metamask.io/).

services/reference/_partials/_optimism_outputatblock-parameters.mdx

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+- `block number`: [_Required_] A hexadecimal block number specifying which block to get the output root for.

services/reference/_partials/_optimism_outputatblock-request.mdx

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+```bash
+curl https://hemi-testnet.infura.io/v3/<YOUR-API-KEY> \
+  -X POST \
+  -H "Content-Type: application/json" \
+  -d '{
+    "jsonrpc": "2.0",
+    "method": "optimism_outputAtBlock",
+    "params": ["0x1b4"],
+    "id": 1
+  }'
+```

services/reference/_partials/_optimism_outputatblock-response.mdx

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+```json
+{
+  "jsonrpc": "2.0",
+  "id": 1,
+  "result": [
+    "0x0000000000000000000000000000000000000000000000000000000000000000",
+    "0xabe711e34c1387c8c56d0def8ce77e454d6a0bfd26cef2396626202238442421"
+  ]
+}
+```

services/reference/_partials/_optimism_outputatblock-returns.mdx

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+An array containing two hexadecimal strings:
+- First element: The output root hash (32 bytes)
+- Second element: The withdrawals storage root hash (32 bytes)

services/reference/_partials/_optimism_rollupconfig-description.mdx

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+Returns the rollup configuration parameters including genesis information, timing parameters, and important contract addresses.

services/reference/_partials/_optimism_rollupconfig-example.mdx

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+Replace `<YOUR-API-KEY>` with an API key from your [MetaMask Developer dashboard](https://developer.metamask.io/).

services/reference/_partials/_optimism_rollupconfig-parameters.mdx

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+None

services/reference/_partials/_optimism_rollupconfig-request.mdx

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+```bash
+curl https://hemi-testnet.infura.io/v3/<YOUR-API-KEY> \
+  -X POST \
+  -H "Content-Type: application/json" \
+  -d '{
+    "jsonrpc": "2.0",
+    "method": "optimism_rollupConfig",
+    "params": [],
+    "id": 1
+  }'
+```