feat: add GoGenerate command

feat(health): add gogenerate

docs(gogenerate): add doc

lua/gopher/gogenerate.lua

@@ -0,0 +1,25 @@
+local Job = require "plenary.job"
+
+return function(...)
+  local args = { ... }
+  if #args == 1 and args[1] == "%" then
+    args[1] = vim.fn.expand "%" ---@diagnostic disable-line: missing-parameter
+  end
+
+  local cmd_args = vim.list_extend({ "generate" }, args)
+
+  Job
+    :new({
+      command = "go",
+      args = cmd_args,
+      on_exit = function(_, retval)
+        if retval ~= 0 then
+          print("command exited with code " .. retval)
+          return
+        else
+          print "command runs successfully"
+        end
+      end,
+    })
+    :start()
+end