feat: Add basic support for rich parameters to coderd and provisionerd (#5710)

provisionersdk/proto/provisioner.proto

@@ -52,6 +52,34 @@ message ParameterSchema {
     string validation_condition = 11;
 }
 
+// RichParameterOption represents a singular option that a parameter may expose.
+message RichParameterOption {
+    string name = 1;
+    string description = 2;
+    string value = 3;
+    string icon = 4;
+}
+
+// RichParameter represents a variable that is exposed.
+message RichParameter {
+    string name = 1;
+    string description = 2;
+    string type = 3;
+    bool mutable = 4;
+    string default_value = 5;
+    string icon = 6;
+    repeated RichParameterOption options = 7;
+    string validation_regex = 8;
+    int32 validation_min = 9;
+    int32 validation_max = 10;
+}
+
+// RichParameterValue holds the key/value mapping of a parameter.
+message RichParameterValue {
+    string name = 1;
+    string value = 2;
+}
+
 // LogLevel represents severity of the log.
 enum LogLevel {
     TRACE = 0;
@@ -183,6 +211,7 @@ message Provision {
     message Plan {
         Config config = 1;
         repeated ParameterValue parameter_values = 2;
+		repeated RichParameterValue rich_parameter_values = 3;
     }
 
     message Apply {
@@ -201,8 +230,9 @@ message Provision {
     message Complete {
         bytes state = 1;
         string error = 2;
-        bytes plan = 4;
         repeated Resource resources = 3;
+		repeated RichParameter parameters = 4;
+		bytes plan = 5;
     }
     message Response {
         oneof type {