refactor(health): keep in mind new way of health check (#63)

lua/gopher/_utils/health_util.lua

@@ -0,0 +1,33 @@
+local h = vim.health or require "health"
+local health = {}
+
+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
+
+---@param ft string
+---@return boolean
+function health.is_treesitter_parser_available(ft)
+  local ok, parser = pcall(vim.treesitter.get_parser, 0, ft)
+  return ok and parser ~= nil
+end
+
+return health