feat(core): Add Cortex-M4 interrupt context helpers

fix(src): Use interrupt nest accessor and export IRQ hook pointers

[dm][regulator] fixup the ref of enabled status

[bsp][rockchip] fixup the drivers' configure

[dm][pmdomain] fixup the child register layout

[kernel]Rewrite rt_thread_get_usage to use incremental statistics based on sampling windows.

fix[src][thread]: add defensive check for idle thread suspension

[drivers][power] add CLI helpers and current control support#11301

refactor[stm32][i2c]: restructure transfer flow and error handling

feat[stm32][i2c]: support poll/int/dma transfer paths and i2c4

[libcpu][risc-v] Fix PLIC interrupt processing order

fix(libcpu): correct arm mpu region validation precedence

fix(libcpu): validate ia32 pic irq vectors

fix(libcpu): validate arm irq vectors before masking

[docs][libcpu][arm][cortex-a] correct TLBIALL comments in start_gcc.S