feat: refactor XPI integration and add programming tool

- Updated filelist to include new XPI source files.
- Modified IRQ compatibility mapping for XPI in the SOC topology generator.
- Adjusted JSON topology configuration to reflect new IRQ signal naming.
- Changed software.mk to reference the new XPI HAL source file.
- Enhanced APB4 peripheral module to include XPI IRQ signal.
- Updated RTL style audit to include new XPI files.
- Documented new XPI programming script in README.
- Added a new script for programming XPI flash through OpenOCD.
- Enhanced XPI IO testbench to validate new LUT engine and isolation behavior.
- Created unit tests for the new XPI programming tool and its functionalities.

configs/ci/ihp130-xpi-flash-loader.mk

@@ -0,0 +1,15 @@
+SOC               := MINI
+PDK               := IHP130
+HAVE_PLL          := NO
+HAVE_SRAM_IF      := YES
+HAVE_SRAM_MACRO   := YES
+PDK_BEHAV         := YES
+HAVE_SVA          := NO
+EXT_CLK_HZ        := 72000000
+AUD_CLK_HZ        := 18432000
+CLINT_TIMEBASE_HZ := 1000000
+ISA               := RV32IM
+HAVE_CSR          := NO
+APP               := xpi_flash_loader
+FIRMWARE_NAME     := retrosoc_xpi_flash_loader
+LINK_TYPE         := jtag_sram