contracts-bedrock: add tests for rlp-reader (#2938)

Ports over the JS tests from the `contracts` package.
The next step is to get some fuzz tests going.

.changeset/sharp-apes-fold.md

+---
+'@eth-optimism/contracts-bedrock': patch
+---
+
+Tests for RLPReader

packages/contracts-bedrock/.gas-snapshot

@@ -102,6 +102,55 @@ L2StandardBridge_Test:test_withdraw_onlyEOA() (gas: 251952)
 L2ToL1MessagePasserTest:test_burn() (gas: 112024)
 L2ToL1MessagePasserTest:test_initiateWithdrawal_fromContract() (gas: 67935)
 L2ToL1MessagePasserTest:test_initiateWithdrawal_fromEOA() (gas: 74851)
+Lib_RLPReader_Test:testReadBool() (gas: 1109)
+Lib_RLPReader_Test:test_readAddress() (gas: 1347)
+Lib_RLPReader_Test:test_readAddressSmall() (gas: 614)
+Lib_RLPReader_Test:test_readAddressTooLarge() (gas: 3646)
+Lib_RLPReader_Test:test_readAddressTooShort() (gas: 3603)
+Lib_RLPReader_Test:test_readBoolInvalidValue() (gas: 3677)
+Lib_RLPReader_Test:test_readBoolLargeInput() (gas: 3550)
+Lib_RLPReader_Test:test_readBytes32_revertOnList() (gas: 3998)
+Lib_RLPReader_Test:test_readBytes32_revertOnTooLong() (gas: 3588)
+Lib_RLPReader_Test:test_readBytes_bytestring00() (gas: 1823)
+Lib_RLPReader_Test:test_readBytes_bytestring01() (gas: 1846)
+Lib_RLPReader_Test:test_readBytes_bytestring7f() (gas: 1844)
+Lib_RLPReader_Test:test_readBytes_invalidListLength() (gas: 3812)
+Lib_RLPReader_Test:test_readBytes_invalidStringLength() (gas: 3768)
+Lib_RLPReader_Test:test_readBytes_revertListItem() (gas: 3922)
+Lib_RLPReader_Test:test_readList_dictTest1() (gas: 23791)
+Lib_RLPReader_Test:test_readList_empty() (gas: 4472)
+Lib_RLPReader_Test:test_readList_incorrectLengthInArray() (gas: 4213)
+Lib_RLPReader_Test:test_readList_int32Overflow() (gas: 3958)
+Lib_RLPReader_Test:test_readList_int32Overflow2() (gas: 4024)
+Lib_RLPReader_Test:test_readList_invalidShortList() (gas: 3858)
+Lib_RLPReader_Test:test_readList_invalidValue() (gas: 3790)
+Lib_RLPReader_Test:test_readList_leadingZerosInLongLengthArray1() (gas: 4196)
+Lib_RLPReader_Test:test_readList_leadingZerosInLongLengthArray2() (gas: 4180)
+Lib_RLPReader_Test:test_readList_leadingZerosInLongLengthList1() (gas: 38563)
+Lib_RLPReader_Test:test_readList_listOfLists() (gas: 9619)
+Lib_RLPReader_Test:test_readList_listOfLists2() (gas: 12479)
+Lib_RLPReader_Test:test_readList_longList1() (gas: 29013)
+Lib_RLPReader_Test:test_readList_longList2() (gas: 202895)
+Lib_RLPReader_Test:test_readList_longStringLength() (gas: 3856)
+Lib_RLPReader_Test:test_readList_multiList() (gas: 12025)
+Lib_RLPReader_Test:test_readList_nonOptimalLongLengthArray1() (gas: 4203)
+Lib_RLPReader_Test:test_readList_nonOptimalLongLengthArray2() (gas: 4226)
+Lib_RLPReader_Test:test_readList_notLongEnough() (gas: 3844)
+Lib_RLPReader_Test:test_readList_shortListMax1() (gas: 40662)
+Lib_RLPReader_Test:test_readList_stringList() (gas: 16796)
+Lib_RLPReader_Test:test_readString_emptyString() (gas: 1719)
+Lib_RLPReader_Test:test_readString_longString() (gas: 3076)
+Lib_RLPReader_Test:test_readString_longString2() (gas: 18524)
+Lib_RLPReader_Test:test_readString_shortString() (gas: 2280)
+Lib_RLPReader_Test:test_readString_shortString2() (gas: 2775)
+Lib_RLPReader_Test:test_readUint256_mediumInt1() (gas: 1235)
+Lib_RLPReader_Test:test_readUint256_mediumInt2() (gas: 1237)
+Lib_RLPReader_Test:test_readUint256_mediumInt3() (gas: 1238)
+Lib_RLPReader_Test:test_readUint256_smallInt() (gas: 1084)
+Lib_RLPReader_Test:test_readUint256_smallInt2() (gas: 1151)
+Lib_RLPReader_Test:test_readUint256_smallInt3() (gas: 1127)
+Lib_RLPReader_Test:test_readUint256_smallInt4() (gas: 1128)
+Lib_RLPReader_Test:test_readUint256_zero() (gas: 1258)
 OVM_ETH_Test:test_approve() (gas: 10760)
 OVM_ETH_Test:test_burn() (gas: 10675)
 OVM_ETH_Test:test_crossDomain() (gas: 10577)