Add x86_64 kernel bring-up with build-selected platform adapters

src/arch/common/arch.common.interrupts.pas

@@ -0,0 +1,23 @@
+// Copyright 2026 Aaron Hance
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+unit arch.common.interrupts;
+interface
+function lock: PtrUInt;
+procedure unlock(flags: PtrUInt);
+implementation
+uses arch.platform.cpu;
+function lock: PtrUInt;
+begin lock := arch.platform.cpu.lock; end;
+procedure unlock(flags: PtrUInt);
+begin arch.platform.cpu.unlock(flags); end;
+end.