Backlog for Connect-ES documentation

[timostamm]

• Clients: Document the timeoutMs option: How to catch; Interop with gRPC; Code deadline_exceeded.
• Clients: Document common use cases for interceptors.
• Web clients: Document how to set fetch properties in the interceptors section.
• Web clients: Document how to bring your own fetch.
• Clients: Link to the custom client example from the roll your own client section.
• Clients and servers: Document context values (see v1.1.0 release notes)
• Servers: Document Connect timeouts (see connect-es#591).
• Servers: Add guide on how to handle errors, document behavior of yield in service implementations.
• Servers: Document JSON and binary options (Any and JSON).
• Servers: Document the shutdownSignal option (also see connect-es#802).
• Node.js clients: Document best practices for client-streaming and bidi RPCs, explain async iterables, show createWritableIterable().
• Node.js: Document compressions settings for clients and servers, including read/write limits.
• Node.js: Document H2 session management (see connect-es#673).
• Node.js: Document how to work with errors in the vain of how Connect-Go has its own errors page for returning errors from services.