refactor: namespace restructure of entire codebase

Reorganize all source files into a hierarchical namespace structure
with dot-separated unit names matching directory paths.

Major changes:
- src/prog/ -> src/app/ (app.*.pas)
- src/fault/ -> src/arch/x86/fault/ (arch.x86.fault.*.pas)
- src/isr/ -> src/arch/x86/isr/ (arch.x86.isr.*.pas)
- src/include/ -> src/core/ (core.*.pas) + src/arch/x86/
- src/driver/ subtree reorganized with driver.* namespace prefixes
- src/driver/storage/con/ -> src/driver/storage/ctl/ (Windows reserved name fix)
- src/driver/storage/ split into con(ctl)/fs/vol/ subdirectories
- src/driver/net/ flattened from l1-l5 layers to driver.net.*.pas
- kernel.pas -> asuro.pas, faults.pas -> arch.x86.faults.pas
- stdio.pas/syslog.pas -> io/io.stdio.pas, io/io.syslog.pas
- processmanager.pas -> proc/proc.mgr.pas
- lmemorymanager.pas -> memory/memory.heap.pas
- Build scripts moved to toolchain/
- Added compat/ shims for lmemorymanager and types
- Added doc/namespace.md tracking the refactor

197 files changed, 6292 insertions(+), 5526 deletions(-)

src/arch/x86/arch.x86.irq.pas

@@ -0,0 +1,56 @@
+//  Copyright 2021 Kieron Morris
+//
+//  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.
+
+{ 
+	Interrupt Request Line - Initialization & Remapping.
+	
+	@author(Aaron Hance <[email protected]>)
+}
+unit arch.x86.irq;
+
+interface
+
+uses core.util, arch.x86.util, io.syslog;
+
+procedure init();
+
+implementation
+
+procedure init();
+begin
+    io.syslog.logln('IRQ','INIT START.');
+    outb($20, $11);
+    io_wait;
+    outb($A0, $11);
+    io_wait;
+    outb($21, $20);
+    io_wait;
+    outb($A1, $28);
+    io_wait;
+    outb($21, $04);
+    io_wait;
+    outb($A1, $02);
+    io_wait;
+    outb($21, $01);
+    io_wait;
+    outb($A1, $01);
+    io_wait;
+    outb($21, $00);
+    io_wait;
+    outb($A1, $00);
+    io_wait;
+    io.syslog.logln('IRQ','INIT END.');
+end;
+
+end.