* Set cache control in the HTTP-RPC response header

* Add a simply cache policy to the RPC routes

* add a condition to check the RPC request has default height settings

* fix cherry pick error

* update pending log

* use options struct intead of single parameter

* refacor FuncOptions to functional options

* add functional options in WebSocket RPC function

* revert doc

* replace deprecated function call

* revise functional options

* remove unuse comment

* fix revised error

* adjust cache-control settings

* Update rpc/jsonrpc/server/http_json_handler.go

Co-authored-by: Thane Thomson <connect@thanethomson.com>

* linter: Fix false positive

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* rpc: Separate cacheable and non-cacheable HTTP response writers

Allows us to roll this change out in a non-API-breaking way, since this
is an additive change.

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* rpc: Ensure consistent caching strategy

Ensure a consistent caching strategy across both JSONRPC- and URI-based
requests.

This requires a bit of a refactor of the previous caching logic, which
is complicated a little by the complex reflection-based approach taken
in the Tendermint RPC.

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* rpc: Add more tests for caching

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* Update CHANGELOG_PENDING

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* light: Sync routes config with RPC core

Signed-off-by: Thane Thomson <connect@thanethomson.com>

* rpc: Update OpenAPI docs

Signed-off-by: Thane Thomson <connect@thanethomson.com>

Signed-off-by: Thane Thomson <connect@thanethomson.com>
Co-authored-by: jayt106 <jaytseng106@gmail.com>
Co-authored-by: jay tseng <jay.tseng@crypto.com>
Co-authored-by: JayT106 <JayT106@users.noreply.github.com>
(cherry picked from commit 816c6ba)

# Conflicts:
#	CHANGELOG_PENDING.md
#	test/fuzz/tests/rpc_jsonrpc_server_test.go