govet: add inline analyzer

[alexandear]

The inline analyzer has been available since golang.org/x/tools@v0.38.0.

---

Checked the analyzer on golangci-lint's codebase:

diff --git a/.golangci.yml b/.golangci.yml
index 8c9f7789..e6605185 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -115,6 +115,7 @@ linters:
             - (github.com/golangci/golangci-lint/v2/pkg/logutils.Log).Errorf
             - (github.com/golangci/golangci-lint/v2/pkg/logutils.Log).Fatalf
       enable:
+        - inline
         - nilness
         - shadow
     errorlint:

❯ make build
go build -o golangci-lint ./cmd/golangci-lint
❯ ./golangci-lint run --enable-only govet
pkg/goanalysis/runner_loadingpackage.go:516:7: inline: Constant reflect.Ptr should be inlined (govet)
        case reflect.Ptr:
             ^
1 issues:
* govet: 1

[ldez]

This is a detector, not really a linter.