Initial multiple repository support

And lots of code reshuffling which likely should've been done in
separate commits..

package_manager/utils.py

@@ -1,4 +1,9 @@
+import bpy
+from . import bpkg
 from pathlib import Path
+import logging
+
+from collections import OrderedDict
 
 def fmt_version(version_number: tuple) -> str:
     """Take version number as a tuple and format it as a string"""
@@ -7,16 +12,18 @@ def fmt_version(version_number: tuple) -> str:
         vstr += "." + str(component)
     return vstr
 
-def parse_repository_url(url: str) -> str:
+def sanitize_repository_url(url: str) -> str:
     """Sanitize repository url"""
     from urllib.parse import urlsplit, urlunsplit
     parsed_url = urlsplit(url)
-    new_path = parsed_url.path.rstrip("repo.json")
+    # new_path = parsed_url.path.rstrip("repo.json")
+    new_path = parsed_url.path
     return urlunsplit((parsed_url.scheme, parsed_url.netloc, new_path, parsed_url.query, parsed_url.fragment))
 
 def add_repojson_to_url(url: str) -> str:
-    """Add repo.json to a url"""
+    """Add `repo.json` to the path component of a url"""
     from urllib.parse import urlsplit, urlunsplit
     parsed_url = urlsplit(url)
     new_path = str(Path(parsed_url.path) / "repo.json")
     return urlunsplit((parsed_url.scheme, parsed_url.netloc, new_path, parsed_url.query, parsed_url.fragment))
+