fix(steps-guix): add unzip/sqlite/guile-sqlite3 build scripts and enable them in manifest

steps-guix/sqlite-3510200/pass1.sh

@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+src_unpack() {
+    local url fname
+
+    url="$(awk 'NR==1 { print $2 }' ../sources)"
+    fname="$(awk 'NR==1 { print $4 }' ../sources)"
+
+    if [ -z "${fname}" ]; then
+        fname="$(basename "${url}")"
+    fi
+
+    cp "${DISTFILES}/${fname}" .
+    unzip -q "${fname}"
+
+    dirname="${fname%.zip}"
+}
+
+src_prepare() {
+    default
+}
+
+src_configure() {
+    local host_triplet
+    host_triplet="$(gcc -dumpmachine)"
+
+    PATH="${PREFIX}/bin:/usr/bin:/bin" \
+    ./configure \
+        --prefix="${PREFIX}" \
+        --libdir="${LIBDIR}" \
+        --host="${host_triplet}" \
+        --build="${host_triplet}" \
+        --disable-tcl
+}
+
+src_compile() {
+    default_src_compile
+}
+
+src_install() {
+    default_src_install
+}

steps-guix/sqlite-3510200/sources

@@ -0,0 +1 @@
+f https://sqlite.org/2026/sqlite-src-3510200.zip 85110f762d5079414d99dd5d7917bc3ff7e05876e6ccbd13d8496a3817f20829