Allow policy evalution with HTTP GET request

design/design.go

design/types.go

gen/http/openapi.json

gen/http/openapi.yaml

gen/http/openapi3.json

gen/http/openapi3.yaml

gen/http/policy/client/cli.go

gen/http/policy/client/encode_decode.go

gen/http/policy/client/paths.go

gen/http/policy/server/encode_decode.go

gen/http/policy/server/paths.go

gen/http/policy/server/server.go

gen/http/policy/server/types.go