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-config.yaml

@@ -0,0 +1,20 @@
+endpoint: http://zabbix-graphql-api:4000/graphql
+overrides:
+  mutation_mode: all
+transport:
+  type: streamable_http
+  stateful_mode: false
+operations:
+  source: local
+  paths:
+    - /mcp/operations
+schema:
+  source: local
+  path: /schema.graphql
+introspection:
+  execute:
+    enabled: true
+  introspect:
+    enabled: true
+  search:
+    enabled: true