sourceList should preserve its original ordering

[ggrieco-tob]

The sourceList field does not always preserve its original order:

crytic-compile/crytic_compile/platform/solc.py

Lines 63 to 66 in 7f6a1c6

	source_list = [x.absolute for x in crytic_compile.filenames]
	# Create our root object to contain the contracts and other information.
	output = {"sources": sources, "sourceList": source_list, "contracts": contracts}

This is caused because crytic_compile.filenames is a Set and converting it to a list won't always preserve its original ordering. Unfortunately, some external software like hevm relies on this to match code in different sources.

[ggrieco-tob]

For some reason, #120 failed to fix this. This was my workaround:

diff --git a/crytic_compile/platform/solc.py b/crytic_compile/platform/solc.py
index 395f48e..1793658 100644
--- a/crytic_compile/platform/solc.py
+++ b/crytic_compile/platform/solc.py
@@ -61,6 +61,7 @@ def export_to_solc(crytic_compile: "CryticCompile", **kwargs: str) -> Union[str,
     # Create additional informational objects.
     sources = {filename: {"AST": ast} for (filename, ast) in crytic_compile.asts.items()}
     source_list = [x.absolute for x in crytic_compile.filenames]
+    source_list.sort()
 
     # Create our root object to contain the contracts and other information.
     output = {"sources": sources, "sourceList": source_list, "contracts": contracts}

but I don't know if the PR is wrong or just my original idea about this issue is wrong.