Missing 'crypto' package (parity with Go 1.26)

Go 1.26 introduced a new `crypto` package containing several core interfaces. However, this package is currently missing in TinyGo ^0.41.0, leading to compilation errors when using libraries that depend on the new standard library structure. For local development, the package can be manually copied from the GOROOT to the TINYGOROOT: ```sh cp $(go env GOROOT)/src/crypto/crypto.go $(tinygo env TINYGOROOT)/src/crypto/ ``` I suggest including this file in the TinyGo to maintain compatibility with Go 1.26.