♻️ refactor(cache-stats)!: refactor the wakatime and music stats modules

Modules now spawn the scripts automatically at startup and kill them at exit. Both stats are handled by a single script and a lockfile is used to avoid multiple instances spawning.

BREAKING CHANGE: Please remove any user services previously used to spawn scripts.

lua/utils/cache_stats.lua

@@ -0,0 +1,17 @@
+--          ╭─────────────────────────────────────────────────────────╮
+--          │                       Cache Stats                       │
+--          ╰─────────────────────────────────────────────────────────╯
+
+local M = {}
+
+local config_dir = vim.fn.stdpath("config")
+local cache_script = config_dir .. "/scripts/update_cache.sh"
+
+-- Function to run the cache update script using vim.system
+function M.setup_script()
+  vim.system({ cache_script }, { detach = true }, function() end)
+end
+
+M.setup_script()
+
+return M