support fuzzy search for tags.
"C++ Intellisense" is a very useful extension based on gtags. However, it doesn't support fuzzy C/C++ tag search, which is a pity. Refer to others' thoughts, a "fuzzy tag" extension is developed to provide a feature of fuzzy tag search based on GNU global gtags.
Setting: fuzzy-tag.autoUpdate: Whether Gtags should update automatically or not when saving file. (default: false)
Support smart case. For example, your input "abc" can match tags "abc" and "ABC", but input "Abc" will only match tag "ABC".
Fix a path bug on Mac OS.