Integrated: 8305721: add `make compile-commands` artifacts to .gitignore

[Joshua Cao]

On Thu, 6 Apr 2023 23:59:55 GMT, Joshua Cao <duke at openjdk.org> wrote:

> `make compile-commands` produces
> 
> * `compile-commands.json` - so clangd knows how to build the project
> * `.cache` - I believe clangd uses this as an indexing cache
> 
> Tested by confirming artifacts are not shown when running `git status`.

This pull request has now been integrated.

Changeset: 9e203823
Author:    Joshua Cao <joshcao at amazon.com>
Committer: Julian Waters <jwaters at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/9e20382311c58bd172abc98bc0a6757c3a64dda1
Stats:     2 lines in 1 file changed: 2 ins; 0 del; 0 mod

8305721: add `make compile-commands` artifacts to .gitignore

Reviewed-by: erikj, jwaters

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PR: https://git.openjdk.org/jdk/pull/13381