chore: add MCP integration and refactor documentation into modular how-to guides

- Moved GraphQL query samples into a new `docs/queries` directory for better organization.
- Added new queries and mutations, including `createHost.graphql` and `GetApiVersion.graphql`.
- Introduced `mcp-config.yaml` and updated `docker-compose.yml` for MCP integration.
- Updated IntelliJ `.idea/workspace.xml` settings to reflect project changes.
- Added new how-to guides (`docs/howtos`) for permissions, tags, MCP integration, and schema usage.
- Enhanced tests by updating file paths and improving sample data locations.
- Refined permissions and host group structures in `zabbix-hostgroups.ts` and `resolvers.ts`.

mcp/operations/apiVersion.graphql

@@ -0,0 +1,3 @@
+query GetApiVersion {
+  apiVersion
+}

mcp/operations/createHost.graphql

@@ -0,0 +1,6 @@
+mutation CreateHost($host: String!, $hostgroupids: [Int!]!, $templateids: [Int!]) {
+  createHost(host: $host, hostgroupids: $hostgroupids, templateids: $templateids) {
+    hostids
+    error
+  }
+}