solana: add 'dylint' security linting tool

Add support for the dylint tool. Configures Cargo.toml to use lints
designed to help identify issues in Solana/Anchor code.

solana/Cargo.toml

@@ -27,3 +27,9 @@ codegen-units = 1
 opt-level = 3
 incremental = false
 codegen-units = 1
+
+# Linting tool for vulnerable anchor patterns
+[workspace.metadata.dylint]
+libraries = [
+    { git = "https://github.com/crytic/solana-lints", pattern = "lints/*" },
+]

solana/Makefile

@@ -22,3 +22,8 @@ node_modules: package-lock.json
 clean:
 	anchor clean
 	rm -rf .anchor node_modules
+
+# To run, install dependencies:  `cargo install cargo-dylint dylint-link`
+.PHONY: lint
+lint:
+	cargo dylint --all --workspace