add missing alire.toml

Author: JeremyGrosser

.gitignore

@@ -1,3 +1,4 @@
 *.o
 *.ali
 lib/aunit*
+alire

alire.toml

@@ -0,0 +1,16 @@
+description = "Ada unit test framework"
+name = "aunit"
+version = "25.0.0-dev"
+authors = ["AdaCore"]
+licenses = "GPL-3.0-or-later WITH GCC-exception-3.1"
+maintainers = ["chouteau@adacore.com"]
+maintainers-logins = ["Fabien-Chouteau"]
+project-files = ["lib/gnat/aunit.gpr"]
+tags=["unit", "test", "unit-test"]
+
+[configuration]
+disabled = true
+
+[gpr-externals]
+AUNIT_BUILD_MODE = ["Devel", "Install"]
+AUNIT_RUNTIME = ["full", "zfp", "zfp-cross", "ravenscar", "ravenscar-cert", "cert"]