Add static analysis for unsafe uint casting (#10318)

* Add static analysis for unsafe uint casting

* Fix violations of uintcast

* go mod tidy

* Add exclusion to nogo for darwin build

* Add test for math.Int

* Move some things to const so they are assured not to exceed int64

* Self review

* lint

* fix tests

* fix test

* Add init check for non 64 bit OS

* Move new deps from WORKSPACE to deps.bzl

* fix bazel build for go analysis runs

* Update BUILD.bazel

Remove TODO

* add math.AddInt method

* Add new test casts

* Add case where builtin functions and declared functions are covered

* Fix new findings

* cleanup

Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>
Co-authored-by: Nishant Das <nishdas93@gmail.com>

tools/blocktree/main.go

@@ -83,7 +83,7 @@ func main() {
 
 		// Construct label of each node.
 		rStr := hex.EncodeToString(r[:2])
-		label := "slot: " + strconv.Itoa(int(b.Block().Slot())) + "\n root: " + rStr
+		label := "slot: " + strconv.Itoa(int(b.Block().Slot())) + "\n root: " + rStr // lint:ignore uintcast -- this is OK for logging.
 
 		dotN := graph.Node(rStr).Box().Attr("label", label)
 		n := &node{