Add keywords in pyproject

Author: firefly-cpp

pyproject.toml

@@ -3,6 +3,7 @@ name = "fireflyalgorithm"
 version = "0.4.4"
 description = "Implementation of Firefly Algorithm in Python"
 authors = ["Iztok Fister Jr. <iztok@iztok-jr-fister.eu>", "Luka Pečnik <luka.pecnik@student.um.si>", "Žiga Stupan <ziga.stupan1@student.um.si>"]
+keywords = ['computational intelligence', 'firefly algorithm', 'swarm intelligence', 'optimization']
 license = "MIT"
 readme = "README.md"
 homepage = "https://github.com/firefly-cpp/FireflyAlgorithm"