Fix missing api host

Fixes #50

Fix activeSessions type

Merge pull request #49 from cloudflare/fix-ci-2

chore: fix lint

Allow connection to any browser provider

Updates the connect method to allow to connect to any browser provider.

Add keep alive option

The default idle time of a browser session is 1 minute, which means that after 1 minute of inactivity (no devtools commands), the browser will be automatically shutdown. With this option, users can now increase it up to 10 minutes.

Add ability to list sessions and connect to an existing sessions

Adds new methods:

• puppeteer.sessions(): lists current open sessions/browsers. Sessions with a connectionId already have a devtools connection from a worker
• puppeteer.connect(endpoint, sessionId): connects to an open session/browser
• puppeteer.history(): lists recent sessions, open and closed, useful to get a sense of what's happening
• puppeteer.limits(): return current limits (eg. can the user open a new browser now?)

Fixes page.screenshot()

This release fixes page.screenshot()

Adds back support to page.pdf()

Merge pull request #15 from cloudflare/pdf-support

Adds back support to page.pdf()