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/human_output.go

@@ -9,6 +9,7 @@ import (
 	"slices"
 	"strings"
 
+	"gitea.dev/tea/internal/services"
 	"gitea.dev/tea/internal/settings"
 	"gitea.dev/tea/internal/terminal"
 	"github.com/mattn/go-runewidth"
@@ -252,9 +253,7 @@ func writeItem[T any](a *application, cmd *cobra.Command, item T, row func(T) []
 
 // legacyColumns gives lists that still render through writeList a header row and a flexible
 // column, keyed by command path without the root. Their owners replace an entry with a listSpec.
-var legacyColumns = map[string][]terminal.Column{
-	"issue list": numberedColumns,
-}
+var legacyColumns = map[string][]terminal.Column{}
 
 // numberedColumns head the rows of issueRow and pullRow.
 var numberedColumns = []terminal.Column{{Header: "ID", Prefix: "#"}, {Header: "Title", Flex: true}, {Header: "State"}, {Header: "Author"}}
@@ -352,3 +351,8 @@ func yesNo(value bool) string {
 func shortSHA(sha string) string {
 	return sha[:min(len(sha), 7)]
 }
+
+// servicePage places a page of a service listing for writeTable.
+func servicePage[T any](page services.Page[T], number int) listPage {
+	return listPage{Number: number, More: page.More, Total: page.Total, Counted: page.Counted}
+}