Support other istio property tokens

[taegyunkim]

Supported property list in our code: https://github.com/anirudhSK/dyn_tracing/blob/089dee3643675a8e75469f3b3a04fff994e48885/src/code_gen.rs#L33

Istio-envoy property token list
https://github.com/istio/envoy/blob/7043f39a2f5f7d072c35b3fe4d50865b5c61a9dc/source/extensions/common/wasm/context.cc#L406

[taegyunkim]

1. METADATA: Dynamic metadata, populated by other Envoy filters as in Well Known Dynamic Metadata

2. FILTER_STATE
   Filter specific states, a map from strings to strings. Can be set by setFilterState() as in this example, and retrieved via getValue({"filter_state", key}) as here

3. REQUEST
   Available request properties are defined here

• path: request header :path
• url_path: request header :path with ?x=10 removed. example FR: Expression language support for removing query params from request.path attribute istio/istio#6380
• host: request header host
• scheme: request header scheme
• method: request header method
• referer: request header referer
• headers
• time: the start time
• id: request header id
• useragent: request header useragent
• size
• total_size: body size + header size
• duration: duration of the request (end_time - start_time), updated when the active stream object is destroyed. Not available before onLog()
• protocol

4. RESPONSE

• code: response code
• trailers: response trailers
• headers: response headers
• flags: response flags
• grcp_status
• total_size

5. CONNECTION

• mtls: whether or not using mTLS
• requested_server_name
• tls_version
• subject_local_certificate
• subject_peer_certificate
• uri_san_local_certificate
• uri_san_peer_certificate
• dns_san_peer_certificate

6. UPSTREAM

• address
• port
• tls_version
• subject_local_certificate
• subject_peer_certificate
• uri_san_local_certificate
• uri_san_peer_certificate
• dns_san_peer_certificate

7. NODE: Node proto

• id
• cluster
• metadata: opaque metadata extending the node identifier
• locality:
• user_agent_name
• user_agent_version
• user_agent_build_version
• extensions
• client_features
• listening_address

8. SOURCE

• address
• port

9. DESTINATION

• address
• port

10. LISTENER_DIRECTION: inbound or outbound. the direction of the traffic relative to the local Envoy

11. LISTENER_METADATA: envoy.config.core.v3.Metadata

12. CLUSTER_NAME

13. CLUSTER_METADATA: cluster specific metadata

14. ROUTE_NAME

15. ROUTE_METADATA

16. PLUGIN_NAME

17. PLUGIN_ROOT_ID

18. PLUGIN_VM_ID