docs: Info about optimizerSteps field in Standard JSON input and metadata listings

docs/metadata.rst

@@ -82,8 +82,12 @@ explanatory purposes.
             deduplicate: false,
             cse: false,
             constantOptimizer: false,
-            yul: false,
-            yulDetails: {}
+            yul: true,
+            // Optional: Only present if "yul" is "true"
+            yulDetails: {
+              stackAllocation: false,
+              optimizerSteps: "dhfoDgvulfnTUtnIf..."
+            }
           }
         },
         metadata: {

docs/using-the-compiler.rst

@@ -231,7 +231,10 @@ Input Description
             "yulDetails": {
               // Improve allocation of stack slots for variables, can free up stack slots early.
               // Activated by default if the Yul optimizer is activated.
-              "stackAllocation": true
+              "stackAllocation": true,
+              // Select optimization steps to be applied.
+              // Optional, the optimizer will use the default sequence if omitted.
+              "optimizerSteps": "dhfoDgvulfnTUtnIf..."
             }
           }
         },