CanonicalHex receives an input and return it's canonical form, i.e.

CombinePolygonSystemTransactions will identify transactions that are "system transactions" and merge them into a single transaction with a predictive name, like the `bor` client does.

ConcatHex concatenates sanitized hex strings.

PrefixedHex is CanonicalHex but with 0x prefix.

SanitizeHex removes the prefix `0x` if it exists and ensures there is an even number of characters in the string, padding on the left of the string is it's not the case.

SplitInBoundedChunks splits the line in `count` chunks and returns the slice `chunks[1:count]` (so exclusive end), but will accumulate all trailing chunks within the last (for free-form strings, or JSON objects).

splitInChunks split the line in chunks and returns the slice `chunks[1:]`, but verifies that there are only exactly one of `validCounts` number of chunks.

ConsoleReader is what reads the `geth` output directly.