Overhaul VirtFusion provider: 20 resources, 30 data sources, multipage pagination

Complete rewrite of the VirtFusion Terraform provider with full API coverage:

- 20 managed resources (server, build, SSH key, user, firewall, IP blocks, etc.)
- 30 data sources (hypervisors, packages, servers, IP blocks, self-service, etc.)
- New HTTP client with proper error handling, query parameter support, and
  automatic multipage pagination via GetAllPages (fetches all pages from
  Laravel-style paginated endpoints and merges into a single response)
- Fixed type mismatches against live API: ServerData.Suspended (int→bool),
  IPBlockData.Type (string→int), PackageData json tags (primaryStorage, etc.),
  ServerData nested CPU/Settings/Resources structure, HypervisorGroupResources
  array response
- Configurable results-per-page (default 300) on all list data sources
- Migrated CI from GitHub Actions to Gitea Actions
- Updated goreleaser config, go.mod dependencies, and examples

Verified against live VirtFusion instance at cp.vps.ezscale.tech:
all data sources return correct data with full pagination support.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

internal/provider/data_source_hypervisor_group_resources.go

@@ -0,0 +1,119 @@
+// Copyright (c) EZSCALE.
+// SPDX-License-Identifier: MPL-2.0
+
+package provider
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+
+	"terraform-provider-virtfusion/internal/client"
+
+	"github.com/hashicorp/terraform-plugin-framework/datasource"
+	"github.com/hashicorp/terraform-plugin-framework/datasource/schema"
+	"github.com/hashicorp/terraform-plugin-framework/types"
+)
+
+var (
+	_ datasource.DataSource              = &HypervisorGroupResourcesDataSource{}
+	_ datasource.DataSourceWithConfigure = &HypervisorGroupResourcesDataSource{}
+)
+
+// NewHypervisorGroupResourcesDataSource returns a new hypervisor group resources data source.
+func NewHypervisorGroupResourcesDataSource() datasource.DataSource {
+	return &HypervisorGroupResourcesDataSource{}
+}
+
+// HypervisorGroupResourcesDataSource defines the data source implementation.
+type HypervisorGroupResourcesDataSource struct {
+	client *client.Client
+}
+
+// HypervisorGroupResourcesDataSourceModel describes the data source data model.
+type HypervisorGroupResourcesDataSourceModel struct {
+	ID       types.Int64 `tfsdk:"id"`
+	Results  types.Int64 `tfsdk:"results"`
+	CPUCores types.Int64 `tfsdk:"cpu_cores"`
+	Memory   types.Int64 `tfsdk:"memory"`
+	Storage  types.Int64 `tfsdk:"storage"`
+}
+
+func (d *HypervisorGroupResourcesDataSource) Metadata(_ context.Context, req datasource.MetadataRequest, resp *datasource.MetadataResponse) {
+	resp.TypeName = req.ProviderTypeName + "_hypervisor_group_resources"
+}
+
+func (d *HypervisorGroupResourcesDataSource) Schema(_ context.Context, _ datasource.SchemaRequest, resp *datasource.SchemaResponse) {
+	resp.Schema = schema.Schema{
+		MarkdownDescription: "Fetches resource information for a VirtFusion hypervisor group.",
+		Attributes: map[string]schema.Attribute{
+			"id": schema.Int64Attribute{
+				MarkdownDescription: "The hypervisor group ID.",
+				Required:            true,
+			},
+			"results": resultsSchemaAttribute(),
+			"cpu_cores": schema.Int64Attribute{
+				MarkdownDescription: "The number of CPU cores available in the group.",
+				Computed:            true,
+			},
+			"memory": schema.Int64Attribute{
+				MarkdownDescription: "The amount of memory available in the group.",
+				Computed:            true,
+			},
+			"storage": schema.Int64Attribute{
+				MarkdownDescription: "The amount of storage available in the group.",
+				Computed:            true,
+			},
+		},
+	}
+}
+
+func (d *HypervisorGroupResourcesDataSource) Configure(_ context.Context, req datasource.ConfigureRequest, resp *datasource.ConfigureResponse) {
+	if req.ProviderData == nil {
+		return
+	}
+
+	c, ok := req.ProviderData.(*client.Client)
+	if !ok {
+		resp.Diagnostics.AddError(
+			"Unexpected Data Source Configure Type",
+			fmt.Sprintf("Expected *client.Client, got: %T.", req.ProviderData),
+		)
+		return
+	}
+
+	d.client = c
+}
+
+func (d *HypervisorGroupResourcesDataSource) Read(ctx context.Context, req datasource.ReadRequest, resp *datasource.ReadResponse) {
+	var data HypervisorGroupResourcesDataSourceModel
+	resp.Diagnostics.Append(req.Config.Get(ctx, &data)...)
+	if resp.Diagnostics.HasError() {
+		return
+	}
+
+	rawResp, err := d.client.GetAllPages(ctx, fmt.Sprintf("/compute/hypervisors/groups/%d/resources?%s", data.ID.ValueInt64(), resultsQueryParam(data.Results)))
+	if err != nil {
+		resp.Diagnostics.AddError("Error Reading Hypervisor Group Resources", err.Error())
+		return
+	}
+
+	var resourcesResp client.HypervisorGroupResourcesResponse
+	if err := json.Unmarshal(rawResp, &resourcesResp); err != nil {
+		resp.Diagnostics.AddError("Error Parsing Hypervisor Group Resources Response", err.Error())
+		return
+	}
+
+	// Aggregate resource totals across all hypervisors in the group.
+	var totalCPU, totalMemory, totalStorage int64
+	for _, entry := range resourcesResp.Data {
+		totalCPU += entry.Resources.CPUCores.Max
+		totalMemory += entry.Resources.Memory.Max
+		totalStorage += entry.Resources.LocalStorage.Max
+	}
+	data.CPUCores = types.Int64Value(totalCPU)
+	data.Memory = types.Int64Value(totalMemory)
+	data.Storage = types.Int64Value(totalStorage)
+
+	resp.Diagnostics.Append(resp.State.Set(ctx, &data)...)
+}