build: add image_build.sh and erase_ota.sh scripts

rust/erase_ota.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+cargo espflash erase-parts otadata --partition-table "${SCRIPT_DIR}/partitions.csv"

rust/image_build.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+rm -f "${SCRIPT_DIR}/image.bin"
+
+"${SCRIPT_DIR}/build_website.sh"
+
+cargo build --release
+espflash save-image \
+    --bootloader "${SCRIPT_DIR}/bootloader.bin" \
+    --partition-table "${SCRIPT_DIR}/partitions.csv" \
+    --chip esp32c6 \
+    target/riscv32imac-unknown-none-elf/release/plant-ctrl2 \
+    "${SCRIPT_DIR}/image.bin"