blackbox: Add accumulating feedback types for numeric and text values. (#26645)

* blackbox: Add accumulating feedback types for numeric and text values.

* correct introduction

* i swear to god i can count to 7

* bloody VSC formatting on save

* formatting changes and doc additions

SQL/updates/59-60.sql

@@ -0,0 +1,23 @@
+-- Migration:  59-60
+-- Author:     warriorstar
+-- Introduced: PR# 26645
+
+-- This migration adds the 'ledger' and 'nested ledger' enum values to the
+-- `feedback` table in conjunction with making those feedback types available
+-- through SSblackbox.
+-- No data migration is required.
+
+ALTER TABLE
+	`feedback`
+MODIFY
+	COLUMN `key_type` ENUM(
+		'text',
+		'amount',
+		'tally',
+		'nested tally',
+		'associative',
+		'ledger',
+		'nested ledger'
+	) NOT NULL
+AFTER
+	`key_name`;