[feat] Nostr Login (#2703)

---------

Co-authored-by: dni ⚡ <office@dnilabs.com>

lnbits/settings.py

@@ -429,10 +429,22 @@ class NodeUISettings(LNbitsSettings):
 class AuthMethods(Enum):
     user_id_only = "user-id-only"
     username_and_password = "username-password"
+    nostr_auth_nip98 = "nostr-auth-nip98"
     google_auth = "google-auth"
     github_auth = "github-auth"
     keycloak_auth = "keycloak-auth"
 
+    @classmethod
+    def all(cls):
+        return [
+            AuthMethods.user_id_only.value,
+            AuthMethods.username_and_password.value,
+            AuthMethods.nostr_auth_nip98.value,
+            AuthMethods.google_auth.value,
+            AuthMethods.github_auth.value,
+            AuthMethods.keycloak_auth.value,
+        ]
+
 
 class AuthSettings(LNbitsSettings):
     auth_token_expire_minutes: int = Field(default=525600)
@@ -443,11 +455,20 @@ class AuthSettings(LNbitsSettings):
             AuthMethods.username_and_password.value,
         ]
     )
+    # How many seconds after login the user is allowed to update its credentials.
+    # A fresh login is required afterwards.
+    auth_credetials_update_threshold: int = Field(default=120)
 
     def is_auth_method_allowed(self, method: AuthMethods):
         return method.value in self.auth_allowed_methods
 
 
+class NostrAuthSettings(LNbitsSettings):
+    nostr_absolute_request_urls: list[str] = Field(
+        default=["http://127.0.0.1:5000", "http://localhost:5000"]
+    )
+
+
 class GoogleAuthSettings(LNbitsSettings):
     google_client_id: str = Field(default="")
     google_client_secret: str = Field(default="")
@@ -475,6 +496,7 @@ class EditableSettings(
     WebPushSettings,
     NodeUISettings,
     AuthSettings,
+    NostrAuthSettings,
     GoogleAuthSettings,
     GitHubAuthSettings,
     KeycloakAuthSettings,