Add a first pass at keylist generation scripts

- Added `extract-keys.sh` to extract argument-taking and non-argument-taking macros from key definitions.
- Added `generate-macro-printer.sh` to generate a C++ program for printing macro values.

etc/generate-keylist/extract-keys.sh

@@ -0,0 +1,6 @@
+# Find potential argument-taking macros
+ggrep --no-filename -oP '^#define \K\w+\s*\([^)]*\)' src/kaleidoscope/key_defs/*.h > /tmp/arg_macros.txt
+
+# Find non-argument-taking macros
+ggrep --no-filename -oP '^#define \K\w+' src/kaleidoscope/key_defs/*.h | ggrep -vFf /tmp/arg_macros.txt > /tmp/non_arg_macros.txt
+

etc/generate-keylist/generate-macro-printer.sh

@@ -0,0 +1,27 @@
+PROGRAM=/tmp/list-macros.cpp
+echo '#include <stdio.h>' > ${PROGRAM}
+echo '#include "kaleidoscope/key_defs.h"' >> ${PROGRAM}
+echo '#include "kaleidoscope/HIDTables.h"' >> ${PROGRAM}
+echo 'int main() {' >> ${PROGRAM}
+echo 'printf("{\\n");' >> ${PROGRAM}
+
+# Handle non-argument-taking macros
+while IFS= read -r macro; do
+    echo "printf(\"'$macro':  %d,\", $macro.getRaw());" >> ${PROGRAM}
+    echo "printf(\"\\\n\");" >> ${PROGRAM}
+done < /tmp/non_arg_macros.txt
+
+# Handle argument-taking macros, generating 32 versions for each
+while IFS= read -r macro; do
+    # Strip off parentheses for the argument-taking macro names
+    macro=$(echo $macro | sed 's/(.*)//')
+    for i in {0..31}; do
+        echo "printf(\"'$macro$i':  %d,\", $macro($i).getRaw());" >> ${PROGRAM}
+        echo "printf(\"\\\n\");" >> ${PROGRAM}
+    done
+done < /tmp/arg_macros.txt
+
+echo 'printf("};\\n");' >> ${PROGRAM}
+echo 'return 0;' >> ${PROGRAM}
+echo '}' >> ${PROGRAM}
+