Update .gitattributes to include additional export-ignore entries

Author: Natuworkguy

.gitattributes

@@ -1,3 +1,12 @@
 * text=auto eol=lf
 
 *.absp text linguist-language=JSON linguist-detectable=true diff=json
+
+.github                 export-ignore
+.vscode                 export-ignore
+.editorconfig           export-ignore
+.flake8                 export-ignore
+.gitattributes          export-ignore
+.gitignore              export-ignore
+.markdownlint-cli2.yaml export-ignore
+AGENTS.md               export-ignore