Fix ctags generate problem

[graycarl]

Fix fail to generate ctags when there is a space in the path. like #44 #146.

We don't need to handle space in the path when the path is passed to child_process.spawn as 'args' (not as the command).

Here is some sample. If we create a file in the path /tmp/Test Dir/file, then run this code:

const { spawn } = require('child_process');
const cat1 = spawn('cat', ['/tmp/Test Dir/file']);
const cat2 = spawn('cat', ['"/tmp/Test Dir/file"']);

cat1.stdout.on('data', (data) => {
	console.log(`stdout from cat1: ${data}`);
});

cat1.stderr.on('data', (data) => {
	console.log(`stderr from cat1: ${data}`);
});

cat2.stdout.on('data', (data) => {
	console.log(`stdout from cat2: ${data}`);
});

cat2.stderr.on('data', (data) => {
	console.log(`stderr from cat2: ${data}`);
});

We'll get some output like this:

stdout from cat1: Some text here.

stderr from cat2: cat: "/tmp/Test Dir/file": No such file or directory

[brettcannon]

I just wanted to say thanks for the PR, @graycarl ! Most of us just got back from vacation, but we will review your PR at some point.

[codecov]

Codecov Report

Merging #489 into master will increase coverage by 0.01%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master     #489      +/-   ##
==========================================
+ Coverage   56.44%   56.46%   +0.01%     
==========================================
  Files         212      212              
  Lines        9970     9968       -2     
  Branches     1756     1754       -2     
==========================================
  Hits         5628     5628              
+ Misses       4338     4336       -2     
  Partials        4        4

Impacted Files	Coverage Δ
src/client/workspaceSymbols/generator.ts	35.84% <0%> (+1.3%)	⬆️

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