Add .vscode folder to .gitignore (apache#2053)

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# Rationale for this change
VSCode places all of its files in a folder now. We should add that
folder to gitignore in the same way we added the original files.

# Are these changes tested?
No tests necessary.

# Are there any user-facing changes?
None.

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Author: rambleraptor

.gitignore

@@ -35,6 +35,7 @@ coverage.xml
 .project
 .settings
 bin/
+.vscode/
 
 # Hive/metastore files
 metastore_db/