Regenerate docs, update CHANGELOG for v1.0.0, clean up registry manifest

- Regenerated docs/ via tfplugindocs: 51 files covering all 20 resources
  and 30 data sources with auto-extracted schemas and examples
- Removed stale docs for old resources (build.md, ssh.md)
- CHANGELOG.md: added v1.0.0 entry with full feature list, breaking
  changes, and security notes
- terraform-registry-manifest.json: confirmed protocol_versions ["6.0"]
  is correct for Terraform Plugin Framework

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

docs/data-sources/package.md

@@ -0,0 +1,32 @@
+---
+# generated by https://github.com/hashicorp/terraform-plugin-docs
+page_title: "virtfusion_package Data Source - virtfusion"
+subcategory: ""
+description: |-
+  Fetches a single VirtFusion package by ID.
+---
+
+# virtfusion_package (Data Source)
+
+Fetches a single VirtFusion package by ID.
+
+
+
+<!-- schema generated by tfplugindocs -->
+## Schema
+
+### Required
+
+- `id` (Number) The package ID.
+
+### Read-Only
+
+- `cpu_cores` (Number) The number of CPU cores in the package.
+- `enabled` (Boolean) Whether the package is enabled.
+- `ipv4` (Number) The number of IPv4 addresses in the package.
+- `memory` (Number) The amount of memory in the package.
+- `name` (String) The package name.
+- `network_speed_inbound` (Number) The inbound network speed in the package.
+- `network_speed_outbound` (Number) The outbound network speed in the package.
+- `storage` (Number) The amount of storage in the package.
+- `traffic` (Number) The traffic limit in the package.