chore: add nightly release scripts

scripts/release/nightly/changelog.sh

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+#!/usr/bin/env bash
+
+# show changes since the last nightly tag
+# ---------------------------------------
+git cliff mega..nightly

scripts/release/nightly/create.sh

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+#!/usr/bin/env bash
+
+# show changes since last release (ignoring nightly) and tag current HEAD with
+# nightly
+# ----------------------------------------------------------------------------
+./scripts/release/nightly/changelog.sh > CHANGELOG.md
+git tag -f nightly
+git push --tags --force
+
+branch=$(git branch --show-current)
+hash=$(git rev-parse HEAD | cut -c 1-7)
+
+# delete last nightly release and create new nightly release from changelog
+# create release with:
+# - *prerelease*: true
+# - *title*: branch-hash
+# - *tag*: nightly
+# - *branch|target*: nightly
+# -------------------------------------------------------------------------
+gh release delete nightly -y
+gh release create -p nightly --target nightly -t "${branch}-${hash}" -F CHANGELOG.md

scripts/release/nightly/release-name.sh

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+#!/usr/bin/env bash
+
+branch=$(git branch --show-current)
+hash=$(git rev-parse HEAD | cut -c 1-7)
+
+echo "${branch}-${hash}"