feat: add German nobility titles (#101)

Adds 12 German/Austrian nobility and ecclesiastical titles sourced from
PR #101 (skurzinz), skipping the duplicate curly-quote variants already
present: edler, erzbischof, fräulein, freifrau, freiherr, fürst,
fürsterzbischof, großfürst, herzog, prinz, reichsgraf, ritter.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: derek73

nameparser/config/titles.py

@@ -255,6 +255,7 @@
     'ecologist',
     'economist',
     'editor',
+    'edler',
     'edmi',
     'edohen',
     'educator',
@@ -270,6 +271,7 @@
     'entertainer',
     'entrepreneur',
     'envoy',
+    'erzbischof',
     'essayist',
     'evangelist',
     'excellency',
@@ -291,10 +293,15 @@
     'founder',
     'fr',
     'frau',
+    'fräulein',
+    'freifrau',
+    'freiherr',
     'friar',
     'frk',
     'frøken',
     'fru',
+    'fürst',
+    'fürsterzbischof',
     'gaf',
     'gen',
     'general',
@@ -306,6 +313,7 @@
     'governor',
     'graf',
     'grand',
+    'großfürst',
     'group',
     'guitarist',
     'guru',
@@ -319,6 +327,7 @@
     'hereditary',
     'heren',
     'herr',
+    'herzog',
     'herren',
     'herrn',
     'high',
@@ -502,6 +511,7 @@
     'principal',
     'printer',
     'printmaker',
+    'prinz',
     'prior',
     'private',
     'pro',
@@ -524,6 +534,7 @@
     'rdml',
     'rear',
     'rebbe',
+    'reichsgraf',
     'registrar',
     'rep',
     'representative',
@@ -534,6 +545,7 @@
     'reverend',
     'right',
     'risk',
+    'ritter',
     'rock',
     'royal',
     'rt',