feat: extend software license lifecycle data

Make license type optional and add lifetime or recurring renewal terms, license file and key storage, and provider portal URLs across the UI, API, filters, imports, translations, and migrations.

netbox_slm/locale/de/LC_MESSAGES/django.po

@@ -261,3 +261,63 @@ msgstr "Softwarelizenz"
 
 msgid "software licenses"
 msgstr "Softwarelizenzen"
+
+msgid "Days"
+msgstr "Tage"
+
+msgid "Months"
+msgstr "Monate"
+
+msgid "Years"
+msgstr "Jahre"
+
+msgid "lifetime license"
+msgstr "Lifetime-Lizenz"
+
+msgid "renewal interval"
+msgstr "Erneuerungsintervall"
+
+msgid "renewal interval unit"
+msgstr "Einheit des Erneuerungsintervalls"
+
+msgid "license file"
+msgstr "Lizenzdatei"
+
+msgid "license key"
+msgstr "Lizenzschlüssel"
+
+msgid "provider portal URL"
+msgstr "Anbieterportal-URL"
+
+msgid "License Credentials"
+msgstr "Lizenzdaten"
+
+msgid "Lifetime license"
+msgstr "Lifetime-Lizenz"
+
+msgid "Renewal interval"
+msgstr "Erneuerungsintervall"
+
+msgid "License file"
+msgstr "Lizenzdatei"
+
+msgid "Download license file"
+msgstr "Lizenzdatei herunterladen"
+
+msgid "License key"
+msgstr "Lizenzschlüssel"
+
+msgid "Provider Portal"
+msgstr "Anbieterportal"
+
+msgid "Yes"
+msgstr "Ja"
+
+msgid "No"
+msgstr "Nein"
+
+msgid "Renewal interval and unit must be specified together."
+msgstr "Erneuerungsintervall und Einheit müssen gemeinsam angegeben werden."
+
+msgid "A lifetime license cannot have a renewal interval or expiration date."
+msgstr "Eine Lifetime-Lizenz darf kein Erneuerungsintervall und kein Ablaufdatum haben."