all: simplify wasm-tools-go dependency

- add internal/wasm-tools/go.mod file to depend on wasm-tools-go
- copy package cm into src/internal/cm
- remove wasm-tools-go "vendor" submodule

internal/tools: fix typo

go.{mod,sum}, internal/tools: add wit-bindgen-go to tools

GNUmakefile: use go run for wit-bindgen-go

GNUmakefile: add tools target to go:generate tools binaries in internal/tools

GNUmakefile: add .PHONY for lint and spell

GNUmakefile, internal/cm: vendor package cm into internal/cm

go.{mod,sum}: update wasm-tools-go to v0.1.4

internal/wasi: use internal/cm package

remove submodule src/vendor/github.com/ydnar/wasm-tools-go

GNUmakefile: add comment documenting what wasi-cm target does

go.{mod,sum}: remove toolchain; go mod tidy

go.mod: revert to Go 1.19

go.mod: go 1.19

go.{mod,sum}, internal/{tools,wasm-tools}: revert root go.mod file to go1.19

Create a wasm-tools specific module that can require go1.22 for wasm-tools-go.

src/syscall/libc_wasip2.go

@@ -7,6 +7,8 @@ package syscall
 import (
 	"unsafe"
 
+	"internal/cm"
+
 	"internal/wasi/cli/v0.2.0/environment"
 	"internal/wasi/cli/v0.2.0/stderr"
 	"internal/wasi/cli/v0.2.0/stdin"
@@ -17,8 +19,6 @@ import (
 	ioerror "internal/wasi/io/v0.2.0/error"
 	"internal/wasi/io/v0.2.0/streams"
 	"internal/wasi/random/v0.2.0/random"
-
-	"github.com/ydnar/wasm-tools-go/cm"
 )
 
 func goString(cstr *byte) string {