tools: refloat 4 Node.js patches to cpplint.py

* Add 3 Node.js checks
* Adjest cpplint.py header rules to Node.js convention

Cherry-pick 12c8b4d1
Original commit message:
    This commit is a suggestion for adding a rule for NULL usages in the
    code base. This will currently report a number of errors which could be
    ignored using // NOLINT (readability/null_usage)

    PR-URL: https://github.com/nodejs/node/pull/17373


Reviewed-By: Jon Moss <me@jonathanmoss.me>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

Refs: https://github.com/nodejs/node/commit/12c8b4d15471cb6211b39c3a2ca5b10fa4b9f12b

Cherry-pick fc81e801
Original commit message:

    Update cpplint.py to check for inline headers when the corresponding
    header is already included.

    PR-URL: https://github.com/nodejs/node/pull/21521


Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>

Refs: https://github.com/nodejs/node/commit/fc81e801913de3e3f3c0c8e26c105f983a74e539

Cherry-pick cbc3dd99
Original commit message:

    src, tools: add check for left leaning pointers

    This commit adds a rule to cpplint to check that pointers in the code
    base lean to the left and not right, and also fixes the violations
    reported.

    PR-URL: https://github.com/nodejs/node/pull/21010


Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>

Refs: https://github.com/nodejs/node/commit/cbc3dd997eb90d629d1b9912b7a5a40eb82343df

Cherry-pick 90299819
Original commit message:

    tools: fix cpplint.py header rules

    THIS COMMIT SHOULD GO WITH THE NEXT. IT WILL FIND NEW LINT.

    PR-URL: https://github.com/nodejs/node/pull/26306


Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>

Refs: https://github.com/nodejs/node/commit/902998190a55d6915b881936f6dd5b6e9cca6ad8

PR-URL: https://github.com/nodejs/node/pull/27098


Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>