Implement runners execute route

Co-authored-by: Tobias Kantusch <tobias.kantusch@student.hpi.uni-potsdam.de>

api/dto/dto.go

@@ -1,28 +1,40 @@
 package dto
 
-// RequestRunner is the expected json structure of the request body for the ProvideRunner function
-type RequestRunner struct {
+// RunnerRequest is the expected json structure of the request body for the ProvideRunner function.
+type RunnerRequest struct {
 	ExecutionEnvironmentId int `json:"executionEnvironmentId"`
 	InactivityTimeout      int `json:"inactivityTimeout"`
 }
 
-// ResponseRunner is the expected result from the api server
-type ResponseRunner struct {
+// ExecutionRequest is the expected json structure of the request body for the ExecuteCommand function.
+type ExecutionRequest struct {
+	Command     string
+	TimeLimit   int
+	Environment map[string]string
+}
+
+// RunnerResponse is the expected response when providing a runner.
+type RunnerResponse struct {
 	Id string `json:"runnerId"`
 }
 
-// ClientError is the response interface if the request is not valid
+// WebsocketResponse is the expected response when creating an execution for a runner.
+type WebsocketResponse struct {
+	WebsocketUrl string
+}
+
+// ClientError is the response interface if the request is not valid.
 type ClientError struct {
 	Message string `json:"message"`
 }
 
-// InternalServerError is the response interface that is returned when an error occurs
+// InternalServerError is the response interface that is returned when an error occurs.
 type InternalServerError struct {
 	Message   string    `json:"message"`
 	ErrorCode ErrorCode `json:"errorCode"`
 }
 
-// ErrorCode is the type for error codes expected by CodeOcean
+// ErrorCode is the type for error codes expected by CodeOcean.
 type ErrorCode string
 
 const (