feat: filter option parsing with tests

filter/kyofilter

@@ -0,0 +1,18 @@
+#!/usr/bin/env python3
+"""CUPS filter for TA 3505ci - injects department account code into PostScript stream."""
+import sys
+
+
+def parse_options(options_str):
+    options = {}
+    for token in options_str.split():
+        if '=' in token:
+            k, v = token.split('=', 1)
+            options[k] = v
+        else:
+            options[token] = 'true'
+    return options
+
+
+if __name__ == '__main__':
+    pass