Provide bridge_getTokenMappings endpoint

[Stefan-Ethernal]

Description

Implement bridge_getTokenMappings JSON RPC endpoint. It should provide all the NewWrappedToken events on the specific network (identified by the network id) in descending order of blockNumber.
The results should be paginated and determined by the page number and page size

Example request

/bridge_getTokenMappings?networkID=1&page=2&pageSize=10

Example response

{
   "tokenMappings":[
      {
         "originTokenNetwork":0,
         "originTokenAddress":"0x928855b2c73a3574684fe7a4d55ae8bae212c92f",
         "wrappedTokenAddress":"0x11136b8af575c1bf11435f14d4a008982bc48b97",
         "transactionHash":"0x1e35755a2e1d4e13fb57380ed2dbc390383d72066bd0316f693029ab96d454c8",
         "timestamp":"2025-01-20T07:50:57.000Z",
         "blockNumber":4315009,
         "metadata":"000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000A00000000000000000000000000000000000000000000000000000000000000012000000000000000000000000000000000000000000000000000000000000000D477265656E20426974636F696E0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044742544300000000000000000000000000000000000000000000000000000000",
         "callData":"0x"
      }
   ],
   "totalTokenMappings":1
}