refactor: fix meilisearch installler and rename meilisearchinstaller to meilisearch_installer

- Renamed the `meilisearchinstaller` module and related files to  `meilisearch_installer` for consistency.
- Updated import statements and references accordingly.
- Added functionality to install, start, and destroy the  Meilisearch service.
- Improved code readability and organization.

examples/installers/meilisearch.vsh

@@ -1,6 +1,8 @@
 #!/usr/bin/env -S v -n -w -gc none  -cc tcc -d use_openssl -enable-globals run
 
-import freeflowuniverse.herolib.installers.db.meilisearchinstaller
+import freeflowuniverse.herolib.installers.db.meilisearch_installer
 
-
-meilisearch := meilisearchinstaller.get()!
+mut meilisearch := meilisearch_installer.get()!
+meilisearch.install()!
+meilisearch.start()!
+meilisearch.destroy()!