refactor(_utils.health): reorganize module

lua/gopher/_utils/health.lua

@@ -1,17 +1,26 @@
-return {
-  ---@param lib string
-  ---@return boolean
-  lualib_is_found = function(lib)
-    local is_found, _ = pcall(require, lib)
-    return is_found
-  end,
+local h = vim.health or require "health"
+local health = {}
 
-  ---@param bin string
-  ---@return boolean
-  binary_is_found = function(bin)
-    if vim.fn.executable(bin) == 1 then
-      return true
-    end
-    return false
-  end,
-}
+health.start = h.start or h.report_start
+health.ok = h.ok or h.report_ok
+health.warn = h.warn or h.report_warn
+health.error = h.error or h.report_error
+health.info = h.info or h.report_info
+
+---@param module string
+---@return boolean
+function health.is_lualib_found(module)
+  local is_found, _ = pcall(require, module)
+  return is_found
+end
+
+---@param bin string
+---@return boolean
+function health.is_binary_found(bin)
+  if vim.fn.executable(bin) == 1 then
+    return true
+  end
+  return false
+end
+
+return health