Add new federation settings to app.example.ini and config-cheat-sheet

Author: Anthony Wang

custom/conf/app.example.ini

@@ -2248,6 +2248,18 @@ PATH =
 ;;
 ;; Enable/Disable user statistics for nodeinfo if federation is enabled
 ; SHARE_USER_STATISTICS = true
+;;
+;; HTTP signature algorithms
+; ALGORITHMS = rsa-sha256, rsa-sha512
+;;
+;; HTTP signature digest algorithm
+; DIGEST_ALGORITHM = SHA-256
+;;
+;; GET headers for federation requests
+; GET_HEADERS = (request-target), Date
+;;
+;; POST headers for federation requests
+; POST_HEADERS = (request-target), Date, Digest
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

docs/content/doc/advanced/config-cheat-sheet.en-us.md

@@ -1087,6 +1087,10 @@ Task queue configuration has been moved to `queue.task`. However, the below conf
 
 - `ENABLED`: **true**: Enable/Disable federation capabilities
 - `SHARE_USER_STATISTICS`: **true**: Enable/Disable user statistics for nodeinfo if federation is enabled
+- `ALGORITHMS`: **rsa-sha256, rsa-sha512**: HTTP signature algorithms
+- `DIGEST_ALGORITHM`: **SHA-256**: HTTP signature digest algorithm
+- `GET_HEADERS`: **(request-target), Date**: GET headers for federation requests
+- `POST_HEADERS`: **(request-target), Date, Digest**: POST headers for federation requests
 
 ## Packages (`packages`)