Create commit right access issue template

Signed-off-by: Maxime Ripard <mripard@kernel.org>

.gitlab/issue_templates/commit_access.md

+# drm-misc Commit Access
+
+Hi!
+
+I'd like to get commit access to the `drm-misc` repository.
+
+## Motivation
+
+<!-- What do you need commit access for? -->
+
+## History
+
+<!--
+We require that committers that committers have some contribution experience
+before getting commit access rights.
+
+See the requirements here: https://drm.pages.freedesktop.org/maintainer-tools/commit-access.html#drm-misc
+
+Please provide a list of ~10 non-trivial commits that were already merged in
+`drivers/gpu/drm`.
+-->
+
+/label ~commit-rights
+/assign @mlankhorst @mripard @tzimmermann
+/cc @airlied @daniels @sima