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

utils/stringmaps_test.go

@@ -0,0 +1,96 @@
+package utils_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"go.woodpecker-ci.org/autoscaler/utils"
+)
+
+func TestSliceToMap(t *testing.T) {
+	testCases := []struct {
+		name    string
+		input   []string
+		del     string
+		want    map[string]string
+		wantErr error
+	}{
+		{
+			name:    "basic",
+			input:   []string{"key1=value1", "key2=value2"},
+			del:     "=",
+			want:    map[string]string{"key1": "value1", "key2": "value2"},
+			wantErr: nil,
+		},
+		{
+			name:    "whitespace",
+			input:   []string{"key1 = value1", "key2=value2"},
+			del:     "=",
+			want:    map[string]string{"key1": "value1", "key2": "value2"},
+			wantErr: nil,
+		},
+		{
+			name:    "missing delimiter",
+			input:   []string{"key1", "key2=value2"},
+			del:     "=",
+			want:    nil,
+			wantErr: assert.AnError,
+		},
+	}
+
+	for _, tt := range testCases {
+		t.Run(tt.name, func(t *testing.T) {
+			actual, err := utils.SliceToMap(tt.input, tt.del)
+			if tt.wantErr != nil {
+				assert.Error(t, err)
+
+				return
+			}
+
+			assert.NoError(t, err)
+			assert.Equal(t, tt.want, actual)
+		})
+	}
+}
+
+func TestMergeMaps(t *testing.T) {
+	testCases := []struct {
+		name string
+		m1   map[string]string
+		m2   map[string]string
+		want map[string]string
+	}{
+		{
+			name: "nil maps",
+			m1:   nil,
+			m2:   nil,
+			want: map[string]string{},
+		},
+		{
+			name: "empty maps",
+			m1:   map[string]string{},
+			m2:   map[string]string{},
+			want: map[string]string{},
+		},
+		{
+			name: "overwrite",
+			m1:   map[string]string{"key1": "value1", "key2": "value2"},
+			m2:   map[string]string{"key2": "newvalue2", "key3": "value3"},
+			want: map[string]string{"key1": "value1", "key2": "newvalue2", "key3": "value3"},
+		},
+		{
+			name: "no overwrite",
+			m1:   map[string]string{"key1": "value1", "key2": "value2"},
+			m2:   map[string]string{"key3": "value3", "key4": "value4"},
+			want: map[string]string{"key1": "value1", "key2": "value2", "key3": "value3", "key4": "value4"},
+		},
+	}
+
+	for _, tt := range testCases {
+		t.Run(tt.name, func(t *testing.T) {
+			merged := utils.MergeMaps(tt.m1, tt.m2)
+			assert.Equal(t, tt.want, merged)
+		})
+	}
+}