pmb.helpers.frontend.kconfig: modernize (MR 2333)

Create new pmb/commands/kconfig_check.py and _edit.py files and move
related code there.

pmb/commands/kconfig_check.py

@@ -0,0 +1,63 @@
+# Copyright 2024 Oliver Smith
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from __future__ import annotations
+from pmb import commands
+from pmb.core.context import get_context
+import pmb.helpers.git
+import pmb.config
+import logging
+
+
+class KConfigCheck(commands.Command):
+    details: bool
+    file: str
+    packages: list[str]
+
+    def __init__(self, details, file, packages):
+        self.details = details
+        self.file = file
+        self.packages = packages
+
+    def run(self):
+        # Build the components list from cli arguments (--waydroid etc.)
+        components_list = []
+
+        # Handle passing a file directly
+        if self.file:
+            if pmb.parse.kconfig.check_file(self.file, components_list, details=self.details):
+                logging.info("kconfig check succeeded!")
+                return
+            raise RuntimeError("kconfig check failed!")
+
+        # Default to all kernel packages
+        if not self.packages:
+            for pkg in pmb.helpers.pmaports.get_list():
+                if pkg.startswith("linux-"):
+                    self.packages.append(pkg.split("linux-")[1])
+
+        # Iterate over all kernels
+        error = False
+        skipped = 0
+        self.packages.sort()
+        for package in self.packages:
+            if not get_context().force:
+                pkgname = package if package.startswith("linux-") else f"linux-{package}"
+                aport = pmb.helpers.pmaports.find(pkgname)
+                apkbuild = pmb.parse.apkbuild(aport)
+                if "!pmb:kconfigcheck" in apkbuild["options"]:
+                    skipped += 1
+                    continue
+            if not pmb.parse.kconfig.check(package, components_list, details=self.details):
+                error = True
+
+        # At least one failure
+        if error:
+            raise RuntimeError("kconfig check failed!")
+        else:
+            if skipped:
+                logging.info(
+                    f"NOTE: {skipped} kernel{' was' if skipped == 1 else 's were'} skipped"
+                    " (consider 'pmbootstrap kconfig check -f')"
+                )
+            logging.info("kconfig check succeeded!")