[Schema] Introduce inlineAction

Original spec #147

schemas/adaptive-card.json

@@ -14,7 +14,7 @@
 			"type": "string",
 			"description": "Schema version that this card requires. If a client is **lower** than this version, the `fallbackText` will be rendered. NOTE: Version is not required for cards within an `Action.ShowCard`",
 			"examples": [
-				"1.0", "1.1"
+				"1.0", "1.1", "1.2"
 			]
 		},
 		"fallbackText": {
@@ -849,6 +849,9 @@
 				"style": {
 					"$ref": "#/definitions/TextInputStyle"
 				},
+				"inlineAction": {
+					"$ref": "#/definitions/InlineAction"
+				},
 				"type": {
 					"type": "string",
 					"description": "Must be `\"Input.Text\"`.",
@@ -866,6 +869,23 @@
 				"id"
 			]
 		},
+		"InlineAction": {
+			"additionalProperties": true,
+			"type": "object",
+			"version": "1.2",
+			"description": "The inline action for the input. Typically displayed to the right of the input. It is strongly recommended that an icon on the action (which will be displayed instead of the title of the action).",
+			"oneOf": [
+				{
+					"$ref": "#/definitions/Action.Submit"
+				},
+				{
+					"$ref": "#/definitions/Action.ShowCard"
+				},
+				{
+					"$ref": "#/definitions/Action.OpenUrl"
+				}
+			]
+		},
 		"Input.Time": {
 			"additionalProperties": true,
 			"type": "object",