feat: add Timeweb Cloud provider for Woodpecker CI autoscaler

- Implement timewebcloud provider with DeployAgent, RemoveAgent, ListDeployedAgentNames
- Add minimal HTTP API client for Timeweb Cloud (create/list/delete servers)
- Register provider in main.go with CLI flags
- Add timeweb-list and timeweb-tester utilities
- Include Dockerfile and docker-compose.yml for deployment
- Update DEPLOY.md with verified OS/preset IDs

config/config.go

@@ -0,0 +1,19 @@
+package config
+
+import "time"
+
+type Config struct {
+	MinAgents              int
+	MaxAgents              int
+	WorkflowsPerAgent      int
+	PoolID                 string
+	Image                  string
+	Environment            map[string]string
+	GRPCAddress            string
+	GRPCSecure             bool
+	AgentInactivityTimeout time.Duration
+	AgentIdleTimeout       time.Duration
+	UserData               string
+	FilterLabels           string
+	ExtraAgentLabels       map[string]string
+}