capDL: Add kernel debugging tool for capDL

Add general debugging features of capDL Kernel Printing

Signed-off-by: Jingyao Zhou <Jingyao.Zhou@data61.csiro.au>

capDL: Remove the old version capDL debugging tool

Remove the old version capDL debugging tool of x86 and arm32

Signed-off-by: Jingyao Zhou <Jingyao.Zhou@data61.csiro.au>

replacing all ifndef with pargma once

All the kernel header files now use pargma once rather than the ifndef,
as the pre-processed C files do not change while header files
are protected with pargma once. This will also solve any naming issues
caused by ifndef.

Convert license tags to SPDX identifiers

This commit also converts our own copyright headers to directly use
SPDX, but leaves all other copyright header intact, only adding the
SPDX ident. As far as possible this commit also merges multiple
Data61 copyright statements/headers into one for consistency.

capdl-dump: tcbDebug list, multicore-support, add tcb command

-Use debuglist for runqueues and filter idle and root thread.
-Refactor sendEPQueue.
-Add multicore support.
-Added TCB_COMMAND, kernel now does translation
depending on how it's configured.

Release snapshot