some work in progress changes to improve developer experience

monaco_editor: increase debounce timeout for pylint checks XXX

on very large python files (>1000 lines) sometimes they queue up and we
have to wait for all requests that were queued by zope.

XXX maybe this does not happen when accessing through haproxy/apache, I
am observing this when hitting zope directly

jedi: generate stubs WIP

ERP5: "quick and dirty" type annotations XXX

IIRC the only thing needed is that ERP5TypeTestCase.getPortal is an
ERP5Site

monaco_editor: also enable jedi for codelens ( WIP: ZMI only )

core: pass "language support url" to text editors XXX

For now this is just the portal_url, but I'm thinking it could be a
proper tool.

monaco_editor: enable pylint in gadget version

because pylint is a bit slow on large components, debounce every 2
seconds. TODO: this is too slow.

monaco_editor: enable formatting provider for python

This makes "Format Document" / "Format Selection" work.

monaco_editor: enable completion provider for python

this makes completions works when using Ctrl+space

monaco_editor: pass portal_type to checkPythonSourceCode

python_support: new business template to act as a language server for python

checkPythonSourceCode: add a cache

When using checkPythonSourceCode integrated in the source code editor,
for a scenario where developer edit a component and save we can benefit
from caching the check message for the source code content, because the
same check that the one happening in the editor will happen when the
component is saved.

This cache varies on:
 - "component_packages" cache cookie which is reset every time some
component code is edited.
 - zope startup time to take into account editions of file system code.
This assumes that after reseting file system code zope will be
restarted.
 - portal_type, because the checks performed by this function also
depend on portal type.

jedi wip

administration: keep using pylint only for now

monaco_editor: jedi WIP

core: use mypy to check python code ( WIP experiment )

Revert "core: use mypy to check python code ( WIP experiment )"

This reverts commit cfa27232.

ERP5TypeTestCase: jedi workarounds

monaco_editor: WIP reference provider for python

monaco_editor: jedi wip (no longer use /tmp/)

yapf: adjust config following up Gabriel feedback