Add new license for pipedream

[pombredanne]

See https://github.com/PipedreamHQ/pipedream/blob/master/LICENSE

[DennisClark]

New license LicenseRef-scancode-pipedream-sal-1.0 (Source-available) created in DejaCode enterprise and public. Not suitable for product usage.

@AyanSinhaMahapatra Please synchronize when you have time, thanks.

[armijnhemel]

Background information: https://pipedream.com/blog/introducing-the-pipedream-source-available-license/

[AyanSinhaMahapatra]

Added in #4278, added also to licensedb and license-expression v30.4.4 , closing.