forgectrl: promote to its own repo, recipe fetches the pinned git source

Sources live at github.com/ScottW514/forgectrl (history extracted, layout src/ + init/); the recipe pins SRCREV and installs the init script from the repo. Adds the build-forgectrl.sh bench cross-compile script.

scripts/bench/build-forgectrl.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+# Cross-compiles forgectrl (the canonical repo, ../../../forgectrl -> synced
+# to ~/dev/openglow-forgefirm/forgectrl) for the factory board, borrowing the
+# Yocto cross toolchain + sysroot from the forgectrl recipe work directory
+# (which carries ulfius and libjpeg). If that path ages out after a clean,
+# regenerate it with: bitbake forgectrl. Run from PowerShell:
+#   wsl -d forge-yocto -- bash <path>/build-forgectrl.sh
+set -e
+TC=/home/builder/dev/openglow-forgefirm/forgefirm/build/tmp/work/cortexa9t2hf-neon-fslc-linux-gnueabi/forgectrl/0.1.0
+export PATH="$TC/recipe-sysroot-native/usr/bin:$TC/recipe-sysroot-native/usr/bin/arm-fslc-linux-gnueabi:$PATH"
+cd /home/builder/dev/openglow-forgefirm/forgectrl
+rm -rf build-arm
+cmake -B build-arm \
+  -DCMAKE_SYSTEM_NAME=Linux -DCMAKE_SYSTEM_PROCESSOR=arm \
+  -DCMAKE_C_COMPILER=arm-fslc-linux-gnueabi-gcc \
+  -DCMAKE_BUILD_TYPE=None \
+  "-DCMAKE_C_FLAGS=--sysroot=$TC/recipe-sysroot -mthumb -mfpu=neon -mfloat-abi=hard -mcpu=cortex-a9 -O2 -g" \
+  "-DCMAKE_EXE_LINKER_FLAGS=--sysroot=$TC/recipe-sysroot" \
+  > /tmp/cmake-fc.log 2>&1
+cmake --build build-arm -j8 > /tmp/fcbuild.log 2>&1 || { tail -30 /tmp/fcbuild.log; exit 1; }
+echo BUILD-OK
+file build-arm/forgectrl 2>/dev/null || ls build-arm/