Update .gitignore to ignore most instruction files (#4109)

Ignore more things

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Author: florent-leborgne

.gitignore

@@ -9,10 +9,10 @@
 # Add LLM/AI related files
 AGENTS.md
 .github/copilot-instructions.md
-.github/instructions/**.instructions.md
+.github/instructions
 CLAUDE.md
 GEMINI.md
 .cursor
 
 # VS code settings
-.vscode
+.vscode