cmds.projects.lib.pkg_relations: Integrate lib.version

- The pkg_relations() function is a horribly bad read. It contains a
  mind-bending amount of interwoven case distinctions that are not clearly
  reflected in the participating variable and function names. Much of it is
  version handling. That's intricate by nature, but much of it has now been
  implemented in the lib.version module, so moving the logic there makes
  the function a good deal more readable than before. That's most of what
  this commit does.

- Use version syntax macros from lib.version instead of
  pkg_relations-defined macros, and fix the fallout in BaseCmdPkgRelations
  and CmdCreateFile.

- Use lib.version also as a central place for dep string parsing from App.

Signed-off-by: Jan Lindemann <jan@janware.com>

src/python/jw/pkg/App.py

@@ -11,10 +11,11 @@ from enum import Enum, auto
 from functools import cache
 from typing import TYPE_CHECKING, override
 
-from .lib.ExecApp import ExecApp as Base
 from .lib.Distro import Distro
+from .lib.ExecApp import ExecApp as Base
 from .lib.log import DEBUG, ERR, log
 from .lib.ProjectConf import ProjectConf
+from .lib.version.Dependency import Dependency
 
 if TYPE_CHECKING:
     import argparse
@@ -435,7 +436,7 @@ class App(Base):
         return self.find_dir(name, ['/tmpl'], ['/opt/' + name + '/share/tmpl'])
 
     def strip_module_from_spec(self, mod: str) -> str:
-        return re.sub(r'-dev$|-devel$|-run$', '', re.split('([=><]+)', mod)[0].strip())
+        return Dependency(mod).base_name
 
     @cache
     def get_value(self, project: str, section: str, key: str) -> str | None: