Add --silent option to vuepress build

[avishnyakov]

Feature request

Add --silent option to vuepress build

What problem does this feature solve?

• messy output during automated builds
• messy output during dozen builds in parallel

What does the proposed API look like?

• vuepress build --silent
• vuepress build -s

How should this be implemented in your opinion?

vuepress build --silent / vuepress build -s should not produce output returning 0 on success and non-0 on failure

Are you willing to work on this yourself?**

No I am not so good in it

[ulivz]

This can be done by redirecting stdout/stderr to /dev/null.

yarn build > "/dev/null" 2>&1
# or
# npm run build > "/dev/null" 2>&1