fix: use package path instead of name

Co-authored-by: Fernandez Ludovic <ldez@users.noreply.github.com>

Author: lbenguigui

mocktail.go

@@ -148,7 +148,7 @@ func walk(root, moduleName string) (map[string]PackageDesc, error) {
 
 				interfaceDesc.Methods = append(interfaceDesc.Methods, method)
 
-				for _, imp := range getMethodImports(method, packageDesc.Pkg.Name()) {
+				for _, imp := range getMethodImports(method, packageDesc.Pkg.Path()) {
 					packageDesc.Imports[imp] = struct{}{}
 				}
 			}

testdata/src/b/b.go

@@ -0,0 +1,5 @@
+package b
+
+func Hello() string {
+	return "hello"
+}

testdata/src/b/c/foo.go

@@ -0,0 +1,38 @@
+package c
+
+import (
+	"bytes"
+	"context"
+	"time"
+
+	"golang.org/x/mod/module"
+)
+
+type Pineapple interface {
+	Hello(bar Water) string
+	World() string
+	Goo() (string, int, Water)
+	Coo(context.Context, string, Water) Water
+}
+
+type Coconut interface {
+	Boo(src *bytes.Buffer) time.Duration
+	Doo(src time.Duration) time.Duration
+	Foo(st Strawberry) string
+	Goo(st string) Strawberry
+	Hoo(string, int, Water)
+	Joo(string, int, Water) (string, int)
+	Koo(src string) (dst string)
+	Loo(st string, values ...int) string
+	Too(src string) time.Duration
+	Voo(src *module.Version) time.Duration
+	Yoo(st string) interface{}
+	Zoo(st interface{}) string
+	Moo(fn func(st, stban Strawberry) Pineapple) string
+}
+
+type Water struct{}
+
+type Strawberry interface {
+	Bar(string) int
+}