[GITEA] Add noreply email address as verified for SSH signed Git commits

- When someone really wants to avoid sharing their email, they could
configure git to use the noreply email for git commits. However if they
also wanted to use SSH signing, it would not show up as verified as the
noreply email address was technically not an activated email address for
the user.
- Add unit tests for the `ParseCommitWithSSHSignature` function.
- Resolves https://codeberg.org/Codeberg/Community/issues/946

(cherry picked from commit 1685de7eba)
(cherry picked from commit b1e8858de9)
(cherry picked from commit 1a6bf24d28)
(cherry picked from commit 0122943345)
(cherry picked from commit cc83614853)
(cherry picked from commit 429febe0dc)
(cherry picked from commit 58a9c2ebe9)
(cherry picked from commit fef94aff1c)
(cherry picked from commit 5c6ecd7579)
(cherry picked from commit ffa33a82bf)
(cherry picked from commit a97de1d5bb)
(cherry picked from commit 57ab2b4a40)

models/asymkey/ssh_key_commit_verification.go

@@ -39,6 +39,12 @@ func ParseCommitWithSSHSignature(ctx context.Context, c *git.Commit, committer *
 			log.Error("GetEmailAddresses: %v", err)
 		}
 
+		// Add the noreply email address as verified address.
+		committerEmailAddresses = append(committerEmailAddresses, &user_model.EmailAddress{
+			IsActivated: true,
+			Email:       committer.GetPlaceholderEmail(),
+		})
+
 		activated := false
 		for _, e := range committerEmailAddresses {
 			if e.IsActivated && strings.EqualFold(e.Email, c.Committer.Email) {