Use structured custom fields in entry editor

main.go

@@ -106,6 +106,8 @@ type ui struct {
 	entryTags            widget.Editor
 	entryPath            widget.Editor
 	entryFields          widget.Editor
+	customFieldKeys      []widget.Editor
+	customFieldValues    []widget.Editor
 	historyIndex         widget.Editor
 	groupName            widget.Editor
 	passwordProfile      widget.Editor
@@ -149,6 +151,7 @@ type ui struct {
 	deleteGroup          widget.Clickable
 	confirmDeleteGroup   widget.Clickable
 	cancelDeleteGroup    widget.Clickable
+	addCustomField       widget.Clickable
 	togglePasswordInline widget.Clickable
 	showEntries          widget.Clickable
 	showTemplates        widget.Clickable
@@ -161,6 +164,7 @@ type ui struct {
 	breadcrumbs          []widget.Clickable
 	groupClicks          []widget.Clickable
 	recentVaultClicks    []widget.Clickable
+	removeCustomFields   []widget.Clickable
 	state                appstate.State
 	visible              []entry
 	currentPath          []string
@@ -278,6 +282,7 @@ func newUIWithState(mode string, sess appstate.CurrentSession, paths statePaths)
 	u.copyIcon, _ = widget.NewIcon(icons.ContentContentCopy)
 	u.passwordProfile.SetText("strong")
 	u.keyboardFocus = focusSearch
+	u.setCustomFieldRows(nil)
 	u.loadRecentVaults()
 	u.filter()
 	return u