fix: keep schema hash on by default, omit via -schemaHash=false

v0.15.0 made schema hash emission opt-in (default off), a breaking change for
consumers that rely on the hash and version constants. Restore the hash to on by
default and make omission opt-out instead.

- default (or -schemaHash): hash + version constants emitted, as before v0.15.0.
- -schemaHash=false: omits the hash from the header comment and the version
  constants (WebRPCVersion, WebRPCSchemaVersion, WebRPCSchemaHash). The
  "Code generated by ... DO NOT EDIT." line stays.

Regenerated _examples (hash restored).

feat: make schema hash and version constants opt-in via -schemaHash

The schema hash in the file header comment and the WebRPCSchemaHash constant
change on every schema edit, producing perpetual git merge conflicts in
generated files. The version constants (WebRPCVersion, WebRPCSchemaVersion,
WebRPCSchemaHash) are rarely consumed.

Gate them behind a new -schemaHash target option (default false), flipping the
previous always-on behavior:

- default: header comment carries only the name and version (no hash), and no
  version constants are emitted. The "Code generated by ... DO NOT EDIT." line stays.
- with -schemaHash: restores today's output exactly (hash in the header plus all
  three constants).

Regenerated _examples to reflect the new default.

Support the new RIDL "basepath" keyword (#8)

Fix -exports=true (#7)

* Fix -exports=true option

* CI: Update to [email protected]

Expose as a Go module with //go:embed FS (#6)

Ignore `json = -` fields (#5)

* Ignore `json = -` fields

Fixes webrpc/webrpc#66

* Fix example RIDL

* Update webrpc-gen

Interoperability tests (copy from gen-typescript repo) (#3)

* Interoperability tests (copy from gen-typescript repo)

* Add .js to import file

Update templates to [email protected] schema (#2)

* README: Update options

* Update to [email protected]

* Fix types

* Improve generated code

* Switch webrpc to webrpc/webrpc#171

* Regenerate tests

 Added wrapper to fetch method (#1)

Lowercase the webrpc-cli custom -options