feat: add configurable sender name and allow users to choose between system and personal SMTP accounts when sending emails

paperless-frontend/src/api/inbox.ts

@@ -120,6 +120,7 @@ export const inboxApi = {
       body: string;
       html?: string;
       segments: { pages: number[]; filename: string }[];
+      sender?: string;
     },
   ) =>
     api.post(`/api/inbox/${encodeURIComponent(id)}/send-email`, body).then(() => {}),

paperless-frontend/src/api/userSettings.ts

@@ -7,9 +7,15 @@ export interface UserSettingsData {
   smtpUser: string | null;
   smtpPassSet: boolean;
   smtpFrom: string | null;
+  smtpFromName: string | null;
   mailSignatureHtml: string | null;
 }
 
+export interface SenderOption {
+  id: string;
+  label: string;
+}
+
 export const userSettingsApi = {
   get: () => api.get<UserSettingsData>('/api/user-settings').then((r) => r.data),
 
@@ -20,4 +26,7 @@ export const userSettingsApi = {
     api
       .post<{ ok: boolean; error?: string }>('/api/user-settings/test-smtp', cfg)
       .then((r) => r.data),
+
+  getSenders: () =>
+    api.get<SenderOption[]>('/api/user-settings/senders').then((r) => r.data),
 };