Summary:
In the revision D4686 Aleix Pol suggests to split source code and run-time analyzers. Runtime checkers now already moved to the "Run" menu (revison D4914).

This patch makes second step to implement "split idea" - code-checkers (Cppcheck/Clang-Tidy/Vera++/etc) now are moved to the "Code" menu (this fixes will be pushed to upstream after the revision acceptance).

The patch requires D5043 applied to kdevplatform.

{F2803841}
{F2803842}
{F2803843}
{F2803844}

Test Plan: Tested with master branch and Cppcheck/Clang-Tidy/Vera++ plugins.

Reviewers: #kdevelop, mwolff, apol

Reviewed By: #kdevelop, apol

Subscribers: mwolff, dfaure, kossebau, kdevelop-devel

Differential Revision: https://phabricator.kde.org/D5044

# Conflicts:
#	analyzers/cppcheck/kdevcppcheck.rc
#	app/kdevelopui.rc