docs: releases: add lifecycle table

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

Author: AkihiroSuda

website/content/en/docs/releases/_index.md

@@ -4,3 +4,13 @@ weight: 300
 ---
 
 See <https://github.com/lima-vm/lima/releases> for the latest release.
+
+## Lifecycle
+
+| Release | Begin      | End                              |
+|---------|------------|----------------------------------|
+| v2.x    | 2025-11-06 | Undecided  (v3 Begin + 3 months) |
+| v1.x    | 2024-11-06 | 2026-02-06 (v2 Begin + 3 months) |
+| v0.x    | 2021-05-14 | 2024-11-06 (v1 Begin + 0 days)   |
+
+Since Lima v1.x, each major release receives security updates and critical bug fixes until three months after the next major release.