C#: Add `csharp-compiler-settings` files

csharp/config/tracer/linux/csharp-compiler-settings

@@ -0,0 +1,7 @@
+**/mcs.exe:
+**/csc.exe:
+  invoke ${env.SEMMLE_PLATFORM_TOOLS}/csharp/Semmle.Extraction.CSharp.Driver
+  prepend --cil
+**/bin/mono*:
+**/dotnet:
+  invoke ${odasa_tools}/extract-csharp.sh

csharp/config/tracer/linux/extract-csharp.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+echo extract-csharp.sh: Called with arguments: "$@"
+
+extractor=$SEMMLE_PLATFORM_TOOLS/csharp/Semmle.Extraction.CSharp.Driver
+
+for i in "$@"
+do
+  shift
+  if [[ `basename -- "$i"` =~ csc.exe|mcs.exe|csc.dll ]]
+  then
+    echo extract-csharp.sh: exec $extractor --cil $@
+    exec "$extractor" --cil $@
+  fi
+done
+
+echo extract-csharp.sh: Not a compiler invocation

csharp/config/tracer/windows/csharp-compiler-settings

@@ -0,0 +1,9 @@
+**\fakes*.exe:
+**\moles*.exe:
+  order compiler
+  trace no
+**\csc*.exe:
+  invoke ${env.SEMMLE_PLATFORM_TOOLS}\csharp\Semmle.Extraction.CSharp.Driver.exe
+  prepend --compiler
+  prepend "${compiler}"
+  prepend --cil