Update cheatsheets

tldr/opencode-session

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# opencode session
+
+> Manage OpenCode sessions.
+> More information: <https://opencode.ai/docs/cli#session>.
+
+- List sessions:
+
+`opencode session list`
+
+- List the last N sessions in a specific format:
+
+`opencode session list {{[-n|--max-count]}} {{10}} --format {{table|json}}`
+
+- Delete a specific session:
+
+`opencode session delete {{session_id}}`
+
+- Display help:
+
+`opencode session {{[-h|--help]}}`