chore: improve project metadata

Author: samineer

setup.cfg

@@ -13,17 +13,32 @@ keywords =
     localization
     l10n
     compiler
+    projectfluent
+    ftl
 classifiers =
     Development Status :: 5 - Production/Stable
     Intended Audience :: Developers
     License :: OSI Approved :: Apache Software License
+    Operating System :: OS Independent
+    Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
     Programming Language :: Python :: 3.12
+    Programming Language :: Python :: Implementation :: CPython
+    Programming Language :: Python :: Implementation :: PyPy
+    Topic :: Software Development :: Compilers
+    Topic :: Software Development :: Libraries :: Python Modules
+    Topic :: Software Development :: Localization
+project_urls =
+    Homepage = https://github.com/django-ftl/fluent-compiler
+    Documentation = https://fluent-compiler.readthedocs.io/en/latest/
+    Repository = https://github.com/django-ftl/fluent-compiler
+    Changelog = https://fluent-compiler.readthedocs.io/en/latest/history.html
+    Tracker = https://github.com/django-ftl/fluent-compiler/issues
 
 [options]
 packages = find: