contracts-bedrock: port RLPWriter tests (#2945)

Ports tests from `contracts`. Will help with coverage results.
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

.changeset/empty-nails-talk.md

+---
+'@eth-optimism/contracts-bedrock': patch
+---
+
+Port RLPWriter tests

packages/contracts-bedrock/.gas-snapshot

@@ -226,6 +226,31 @@ RLPReader_Test:test_readUint256_smallInt2() (gas: 1151)
 RLPReader_Test:test_readUint256_smallInt3() (gas: 1127)
 RLPReader_Test:test_readUint256_smallInt4() (gas: 1128)
 RLPReader_Test:test_readUint256_zero() (gas: 1258)
+RLPWriter_Test:test_writeList_dictTest1() (gas: 37148)
+RLPWriter_Test:test_writeList_empty() (gas: 1751)
+RLPWriter_Test:test_writeList_listoflists() (gas: 10969)
+RLPWriter_Test:test_writeList_listoflists2() (gas: 16779)
+RLPWriter_Test:test_writeList_longlist1() (gas: 40730)
+RLPWriter_Test:test_writeList_longlist2() (gas: 283278)
+RLPWriter_Test:test_writeList_multiList() (gas: 22660)
+RLPWriter_Test:test_writeList_shortListMax1() (gas: 36985)
+RLPWriter_Test:test_writeList_stringList() (gas: 10786)
+RLPWriter_Test:test_writeString_bytestring00() (gas: 1022)
+RLPWriter_Test:test_writeString_bytestring01() (gas: 978)
+RLPWriter_Test:test_writeString_bytestring7f() (gas: 1002)
+RLPWriter_Test:test_writeString_empty() (gas: 1704)
+RLPWriter_Test:test_writeString_longstring() (gas: 17180)
+RLPWriter_Test:test_writeString_longstring2() (gas: 261864)
+RLPWriter_Test:test_writeString_shortstring() (gas: 2544)
+RLPWriter_Test:test_writeString_shortstring2() (gas: 15563)
+RLPWriter_Test:test_writeUint_mediumint() (gas: 8430)
+RLPWriter_Test:test_writeUint_mediumint2() (gas: 8780)
+RLPWriter_Test:test_writeUint_mediumint3() (gas: 9189)
+RLPWriter_Test:test_writeUint_smallint() (gas: 7350)
+RLPWriter_Test:test_writeUint_smallint2() (gas: 7352)
+RLPWriter_Test:test_writeUint_smallint3() (gas: 7372)
+RLPWriter_Test:test_writeUint_smallint4() (gas: 7351)
+RLPWriter_Test:test_writeUint_zero() (gas: 7798)
 ResourceMetering_Test:test_initialResourceParams() (gas: 8964)
 ResourceMetering_Test:test_updateNoGasDelta() (gas: 2008269)
 ResourceMetering_Test:test_updateOneEmptyBlock() (gas: 18123)