Implement basic copy and paste task#187

xingfan-git wants to merge 46 commits into

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dev/xingfan/111-copy-and-paste-2-implement-basic-copy-and-paste-taskmicrosoft/vscode-documentdb:dev/xingfan/111-copy-and-paste-2-implement-basic-copy-and-paste-taskCopy head branch name to clipboard