docs(docs): add drydock documentation and update tools index

docs/tools/index.mdx

@@ -22,6 +22,7 @@ Packages come from `.chezmoidata/packages.yaml` and are installed by `run_onchan
 | [bat](/tools/bat) | bat | `dot_config/bat/` | cyberdream tmTheme |
 | [Topgrade](/tools/topgrade) | topgrade | `dot_config/topgrade.toml` | n/a |
 | [Hunk](/tools/hunk) | hunk diff viewer | `dot_config/hunk/config.toml` | `auto` |
+| [drydock](/tools/drydock) | drydock repo fleet view | `dot_config/drydock/config.toml` | n/a |
 | [television](/tools/television) | tv fuzzy picker, custom cables | external repo via `.chezmoiexternals/television.toml` | `cyberdream-transparent` |
 | [LeetCode](/tools/leetcode) | leetcode CLI, `lc-elir` | `dot_leetcode/` | n/a |