Sync linked-list

[mk-mxp]

• Run bin/configlet sync -u -e linked-list --yes --docs --filepaths --metadata --tests include (updates the Markdown files and maybe tests.toml)
  • metadata: unsynced: linked-list
• Drop strict types comments from test file and example code (these are useless)
• Add and sync test meta data to tests (uuid / #TestDox in DocBlocks)
• Add exercise to bin/auto-sync.txt to keep it in sync (keep the file alphabetically sorted)
• Decide on adding / adjusting / ordering test cases to match current problem specs
  • linked-list: missing 19 test cases

Do not redesign the student's interface or add test cases that would invalidate existing community solutions. These are extra tasks, which should be discussed in advance.

[A-O-Emmanuel]

Hi @mk-mxp can i be assigned to this?

[mk-mxp]

@A-O-Emmanuel Thanks for doing this! You may look at #909 for what the result should look like.