Chore(entropy) add error page (#524)

* chore(entropy)-add-error-page

* indexing

* changes

Author: aditya520

pages/entropy/_meta.json

@@ -38,6 +38,7 @@
     "href": "https://fortuna.dourolabs.app/docs/",
     "newWindow": true
   },
+  "error-codes": "Error Codes",
   "examples": "Example Applications",
 
   "-- Understanding Entropy": {

pages/entropy/error-codes.mdx

@@ -0,0 +1,21 @@
+# Error Codes
+
+The following table contains the errors used in the Pyth Network's Entropy [EVM contracts](https://github.com/pyth-network/pyth-crosschain/blob/d290f4ec47a73636cf77711f5f68c3455bb8a8ca/target_chains/ethereum/contracts/contracts/entropy/Entropy.sol).
+This information is derived from [EntropyErrors.sol](https://github.com/pyth-network/pyth-crosschain/blob/d290f4ec47a73636cf77711f5f68c3455bb8a8ca/target_chains/ethereum/entropy_sdk/solidity/EntropyErrors.sol)
+in the Pyth EntropySDK and can be used to decode error codes programmatically.
+
+| Error Codes | Error                       | Error Description                                                                                                                                                                                                           |
+| ----------- | --------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| 0xd82dd966  | AssertionFailure()          | Contract invariant failed.                                                                                                                                                                                                  |
+| 0xda041bdf  | ProviderAlreadyRegistered() | Provider already registered.                                                                                                                                                                                                |
+| 0xdf51c431  | NoSuchProvider()            | Requested Provider does not exist.                                                                                                                                                                                          |
+| 0xc4237352  | NoSuchRequest()             | Request does not exist or the request has been fulfilled.                                                                                                                                                                   |
+| 0x3e515085  | OutOfRandomness()           | Provider is out of committed random numbers.                                                                                                                                                                                |
+| 0x025dbdd4  | InsufficientFee()           | Request fee is insufficient.                                                                                                                                                                                                |
+| 0xb8be1a8d  | IncorrectRevelation()       | Revelation does not match commitment.                                                                                                                                                                                       |
+| 0xb463ce7a  | InvalidUpgradeMagic()       | Governance message is invalid.                                                                                                                                                                                              |
+| 0x82b42900  | Unauthorized()              | `msg.sender` is not allowed to invoke this method.                                                                                                                                                                          |
+| 0x92555c0e  | BlockhashUnavailable()      | Blockhash is unavailable.                                                                                                                                                                                                   |
+| 0x50f0dc92  | InvalidRevealCall()         | Invalid reveal call method. If a request was made using `requestWithCallback`, request should be fulfilled using `revealWithCallback`else if a request was made using `request`, request should be fulfilled using `reveal` |
+| 0xb28d9c76  | LastRevealedTooOld()        | Last random number revealed is too old.                                                                                                                                                                                     |
+| 0x5e5b3f1b  | UpdateTooOld()              | More recent commitment already revealed on-chain.                                                                                                                                                                           |