Add debug ipython command

This can help developers to drop quite fast into a interactive python
shell with a usable pulp_ctx preconfigured.

[noissue]

CHANGES/+ipython.feature

@@ -0,0 +1 @@
+Added `pulp debug ipython` command to drop into a python shell.

pulpcore/cli/common/debug.py

@@ -12,6 +12,13 @@
     pulp_group,
 )
 
+try:
+    import IPython
+except ImportError:
+    IPYTHON_AVAILABLE = False
+else:
+    IPYTHON_AVAILABLE = True
+
 translation = get_translation(__package__)
 _ = translation.gettext
 
@@ -23,6 +30,35 @@ def debug() -> None:
     """
 
 
+if IPYTHON_AVAILABLE:
+
+    @debug.command()
+    @pass_pulp_context
+    @click.pass_context
+    def ipython(
+        ctx: click.Context,
+        pulp_ctx: PulpCLIContext,
+    ) -> None:
+        """
+        Drop into an interactive python shell.
+        Prepopulated symbols:
+          - click
+          - PluginRequirement
+          - ctx: click.Context
+          - pulp_ctx: PulpContext
+        """
+        user_ns: t.Dict[str, t.Any] = {
+            # modules
+            "click": click,
+            # Classes
+            "PluginRequirement": PluginRequirement,
+            # Objects
+            "ctx": ctx,
+            "pulp_ctx": pulp_ctx,
+        }
+        IPython.start_ipython(argv=[], user_ns=user_ns)
+
+
 @debug.command()
 @click.option("--name", required=True)
 @click.option("--min-version", help=_("Succeed only if the installed version is not smaller."))

pyproject.toml

@@ -180,6 +180,7 @@ explicit_package_bases = true
 module = [
   "click_shell.*",
   "gnupg.*",
+  "IPython.*",
   "schema.*",
 ]
 ignore_missing_imports = true