[c#] Add support to importCode (#4150)

joern-cli/src/universal/csharpsrc2cpg

@@ -0,0 +1,17 @@
+#!/usr/bin/env sh
+
+if [ "$(uname -s)" = "Darwin" ]; then
+    SCRIPT_ABS_PATH=$(greadlink -f "$0")
+else
+    SCRIPT_ABS_PATH=$(readlink -f "$0")
+fi
+
+SCRIPT_ABS_DIR=$(dirname "$SCRIPT_ABS_PATH")
+SCRIPT="$SCRIPT_ABS_DIR"/frontends/csharpsrc2cpg/csharpsrc2cpg
+
+if [ ! -f "$SCRIPT" ]; then
+    echo "Unable to find $SCRIPT, have you created the distribution?"
+    exit 1
+fi
+
+$SCRIPT -J-XX:+UseG1GC -J-XX:CompressedClassSpaceSize=128m -Dlog4j.configurationFile="$SCRIPT_ABS_DIR"/conf/log4j2.xml "$@"

joern-cli/src/universal/csharpsrc2cpg.bat

@@ -0,0 +1,6 @@
+@echo off
+
+set "SCRIPT_ABS_DIR=%~dp0"
+set "SCRIPT=%SCRIPT_ABS_DIR%frontends\csharpsrc2cpg\bin\csharpsrc2cpg.bat"
+
+"%SCRIPT%" "-J-XX:+UseG1GC" "-J-XX:CompressedClassSpaceSize=128m" "-Dlog4j.configurationFile=%SCRIPT_ABS_DIR%conf\log4j2.xml" %*