[clang][Tooling] Filter flags that generate output in SyntaxOnlyAdjuster

Summary:
Flags that generate output could result in failures when creating
syntax only actions. This patch introduces initial logic for filtering out
those. The first such flag is "save-temps", which saves intermediate
files(bitcode, assembly, etc.) into a specified directory.

Fixes https://github.com/clangd/clangd/issues/191

Reviewers: hokein

Subscribers: ilya-biryukov, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D70173