chore(shared/logback): Add comments with usages

Author: NickLarsenNZ

shared/logback/boil-config.toml

@@ -1,11 +1,15 @@
+# Used by ZooKeeper 3.9.4, 3.9.5
 [versions."1.3.15".local-images]
 java-devel = "21"
 
+# Used by NiFi 2.6.0
 [versions."1.5.18".local-images]
 java-devel = "21"
 
+# Used by NiFi 2.7.2 (Deprecated since 26.7)
 [versions."1.5.24".local-images]
 java-devel = "21"
 
+# Used by NiFi 2.9.0
 [versions."1.5.32".local-images]
 java-devel = "21"