[solana receiver] Try solana signature verification builtin (#736)

* gr

* wtf

* wtf

* jfc

* jfc

* oh thank god

* make the test work

* cleanup

* cleanup

Author: jayantk

target_chains/solana/Anchor.toml

@@ -16,3 +16,4 @@ wallet = "~/.config/solana/id.json"
 deploy = "anchor deploy --program-keypair program_address.json --program-name solana-receiver"
 cli_build = "cargo build --package pyth-solana-receiver-cli"
 cli_test = "cargo run --package pyth-solana-receiver-cli post-and-receive-vaa -v AQAAAAABABPz9W9ARa/V06ZBp68lkoGJ3tlnJRZ2/jYU4Wi1jdQAdQj3ZkPLKIMtzN3EqaCAjKrLG/sKqADTbPoaBtn9zKUBZAYEhwAAAAAAAfNGGVrALzfWDU24/6bvdMsb41UAR1Q6Sp7prPTXhpewAAAAAApC0/gBUDJXSAADAAEAAQIAAwCdfVoraihHxJUfK+NKfkJ4r4DsPSm8uMcxEWv1D/av5l7/DsJkQsV9dFZpW4Q2lOc3mxXPGyULJ+DkfmV/GVWq/wAAAAAAG8iMAAAAAAAAARb////7AAAAAAAbz04AAAAAAAABfQEAAAACAAAACwAAAABkBgSHAAAAAGQGBIcAAAAAZAYEhwAAAAAAG8hzAAAAAAAAAS8AAAAAZAYEhD3tPwvP5dgslVQroHu37+dlyxeoTqcDWIDDMUz5Y0KBMhuk1gj6dbp21tc9qnFavL3rnboCJX8FobWReLSfWZsAAAAAACBQdgAAAAAAAANS////+wAAAAAAID+JAAAAAAAAA00BAAAAAgAAAAsAAAAAZAYEhwAAAABkBgSHAAAAAGQGBIYAAAAAACBQKwAAAAAAAAOdAAAAAGQGBIRPu3srgFy1FVEoeBBWS6f74PhYsJvdbggVRmGyUzFy1DChkVj1pUwK34+3VgYnND8iobyFK4nVa+GszcXb+W0OAAAAAAAcQ44AAAAAAAAAhP////0AAAAAABxBSQAAAAAAAACXAQAAAAIAAAATAAAAAGQGBIcAAAAAZAYEhwAAAABkBgSGAAAAAAAcQ28AAAAAAAAAZgAAAABkBgSE"
+test = "anchor build && cargo test"