Add architecture for multiple managers

using the chain of responsibility pattern.

internal/runner/aws_manager.go

@@ -0,0 +1,57 @@
+package runner
+
+import (
+	"fmt"
+	"github.com/openHPI/poseidon/pkg/dto"
+)
+
+type AWSRunnerManager struct {
+	*AbstractManager
+}
+
+// NewAWSRunnerManager creates a new runner manager that keeps track of all runners at AWS.
+func NewAWSRunnerManager() *AWSRunnerManager {
+	return &AWSRunnerManager{&AbstractManager{}}
+}
+
+func (a AWSRunnerManager) ListEnvironments() []ExecutionEnvironment {
+	return []ExecutionEnvironment{}
+}
+
+func (a AWSRunnerManager) GetEnvironment(_ dto.EnvironmentID) (ExecutionEnvironment, bool) {
+	return nil, false
+}
+
+func (a AWSRunnerManager) StoreEnvironment(_ ExecutionEnvironment) {}
+
+func (a AWSRunnerManager) DeleteEnvironment(_ dto.EnvironmentID) {}
+
+func (a AWSRunnerManager) EnvironmentStatistics() map[dto.EnvironmentID]*dto.StatisticalExecutionEnvironmentData {
+	return map[dto.EnvironmentID]*dto.StatisticalExecutionEnvironmentData{}
+}
+
+func (a AWSRunnerManager) Claim(id dto.EnvironmentID, duration int) (Runner, error) {
+	r, err := a.NextHandler().Claim(id, duration)
+	if err != nil {
+		return nil, fmt.Errorf("aws wraped: %w", err)
+	}
+	return r, nil
+}
+
+func (a AWSRunnerManager) Get(runnerID string) (Runner, error) {
+	r, err := a.NextHandler().Get(runnerID)
+	if err != nil {
+		return nil, fmt.Errorf("aws wraped: %w", err)
+	}
+	return r, nil
+}
+
+func (a AWSRunnerManager) Return(r Runner) error {
+	err := a.NextHandler().Return(r)
+	if err != nil {
+		return fmt.Errorf("aws wraped: %w", err)
+	}
+	return nil
+}
+
+func (a AWSRunnerManager) Load() {}