fix: GitLab LoadTreeEntries not loading whole tree

Requested only the first page of the API results so we only got those
entries that were on the first page. Now we use the Next-Page entry from
the header to iterate over all pages. Increased the amount of loaded
items per call from 20 to 100 too.

pkg/proji/repo/gitlab/gitlab.go

@@ -75,13 +75,32 @@ func (g *GitLab) FilePathToRawURI(filePath string) string {
 
 // GetTreeEntries gets the paths and types of the repo tree
 func (g *GitLab) LoadTreeEntries() error {
+	// Reset tree entries
+	g.TreeEntries = make([]*gl.TreeNode, 0)
 	pid := g.OwnerName + "/" + g.RepoName
 	rec := true
-	treeNodes, _, err := g.client.Repositories.ListTree(pid, &gl.ListTreeOptions{Recursive: &rec, Ref: &g.BranchName})
-	if err != nil {
-		return err
+	nextPage := 1
+
+	for {
+		treeNodes, resp, err := g.client.Repositories.ListTree(pid, &gl.ListTreeOptions{
+			Recursive: &rec,
+			Ref:       &g.BranchName,
+			ListOptions: gl.ListOptions{
+				Page:    nextPage,
+				PerPage: 100,
+			},
+		})
+		if err != nil {
+			return err
+		}
+		g.TreeEntries = append(g.TreeEntries, treeNodes...)
+
+		// Break if no next page
+		if resp.NextPage == 0 {
+			break
+		}
+		nextPage = resp.NextPage
 	}
-	g.TreeEntries = treeNodes
 	return nil
 }