add support to optimism sepolia

Author: MCarlomagno

src/types/docs-schemas/definitions.schema.json

@@ -41,6 +41,7 @@
         "arbitrum-sepolia",
         "optimism",
         "optimism-goerli",
+        "optimism-sepolia",
         "celo",
         "alfajores",
         "harmony-s0",

src/types/docs/definitions-definitions-publicnetwork.md

@@ -31,6 +31,7 @@
 | `"arbitrum-sepolia"` |             |
 | `"optimism"`         |             |
 | `"optimism-goerli"`  |             |
+| `"optimism-sepolia"` |             |
 | `"celo"`             |             |
 | `"alfajores"`        |             |
 | `"harmony-s0"`       |             |