feat(issue): gh-style issue list, view, create, edit, close and reopen

issue list renders through the shared table: a context line, ID TITLE
LABELS [STATE] [KIND] AUTHOR UPDATED with relative times on a terminal,
the ID colored by state and linked, and a stable tab-separated column
set when piped; empty results say so on stderr. It gains -s -L -l -a -A
-m -S -w, @me, comma-separated label and milestone filters, and --web.

issue view, edit, close and reopen accept #N, OWNER/REPO#N and issue
URLs. Mutations report "✓ Created/Edited/Closed issue alice/x#5 (title)"
on a terminal; issue create prints the new issue's URL on stdout (also
as issue new), and close and reopen skip issues already in that state
with a ! line and take -c/--comment. issue create and edit gain the gh
short flags and singular --add-label, --remove-label, --add-assignee and
--remove-assignee (the plural names still work), and create gains --web.

The interactive create form asks for the title and body, then "What's
next?" (submit, add metadata or cancel), without a confirmation after
it; the edit form names the issue it edits. Every issue command has help
text with examples and completes its flags and issue numbers.

Signed-off-by: bircni <bircni@icloud.com>

internal/app/issue_create_form_test.go

@@ -49,13 +49,13 @@ func TestIssueCreateImplicitInteractiveForm(t *testing.T) {
 	deps.Streams.InTTY, deps.Streams.ErrTTY = true, true
 	require.NoError(t, Execute(context.Background(), deps, []string{"issue", "create", "-R", "alice/project", "--json=number,url", "--interactive"}))
 	require.Equal(t, 1, form.calls)
-	require.NotNil(t, form.choices.EditBody)
+	require.Nil(t, form.choices.EditBody, "without an editor the form asks for the body")
 	require.True(t, form.choices.CanPush)
 	require.Equal(t, []string{"alice", "bob"}, form.choices.Assignees)
 	require.Equal(t, []terminal.IssueMilestoneChoice{{Title: "Release", ID: 4}}, form.choices.Milestones)
 	require.Equal(t, []terminal.IssueLabelChoice{{Name: "bug", ID: 2}, {Name: "docs", ID: 3}}, form.choices.Labels)
 	require.Equal(t, []terminal.IssueTemplateChoice{{Name: "Bug", About: "Report", Title: "bug: ", Body: "## Steps"}}, form.choices.Templates)
-	require.Len(t, prompt.confirmations, 1)
+	require.Empty(t, prompt.confirmations)
 	require.Equal(t, "Interactive", createPayload["title"])
 	require.Equal(t, "Body text", createPayload["body"])
 	require.Equal(t, []any{"alice"}, createPayload["assignees"])
@@ -79,6 +79,7 @@ func TestIssueCreateInteractiveDraftSurvivesSubmissionFailure(t *testing.T) {
 		Title: "Interactive", Body: "saved body", Draft: terminal.Draft{Path: path, Body: "saved body"},
 	}}
 	deps, out, _ := serverDeps(t, server.URL)
+	deps.Getenv = serverEnv(server.URL, map[string]string{"EDITOR": "chosen-editor"})
 	deps.IssueForm = form
 	deps.Prompter = &scriptedPrompter{accept: true}
 	deps.Streams.InTTY, deps.Streams.ErrTTY = true, true