fix(go): return empty map when current go module has no deps

[acehinnnqru]

What type of PR is this?

fix: abcoder would panic when walk to module which has no deps.

For go list -json all, if current module has no deps, it would print something like:

go: warning: "all" matched no packages

which would cause decode json error in lang/golang/parser/parser.go:117, then would cause panic in lang/golang/parser/parser.go:90.

We should handle this situation.

Plus, I use official modfile to parse module name in getModuleName.

Check the PR title.

• This PR title match the format: <type>(optional scope): <description>
• The description of this PR title is user-oriented and clear enough for others to understand.
• Attach the PR updating the user documentation if the current PR requires user awareness at the usage level. User docs repo

(Optional) Translate the PR title into Chinese.

(Optional) More detailed description for this PR(en: English/zh: Chinese).

en:
zh(optional):

(Optional) Which issue(s) this PR fixes:

(optional) The PR that updates user documentation: