docs: add bump blocksuite guideline

docs/contributing/bump-blocksuite.md

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+# Bump Blocksuite
+
+```shell
+./scripts/upgrade-blocksuite.sh
+```
+
+## Understand the version number
+
+### Stable
+
+You can see all the stable version tags [here](https://github.com/toeverything/blocksuite/tags).
+
+### Nightly
+
+If it's nightly version, the version will follow `${version}-${date}-${hash}`.
+
+For example, `0.4.0-20230203030233-b22bea7` means that
+the version is based on `0.4.0`, the building date is `20230203030233`,
+and the commit hash is `b22bea7`.
+
+> For the source code, see [here](https://github.com/toeverything/set-build-version/blob/master/src/version.ts)
+
+Using this version format, you can easily check the diff between each version.
+
+For example, the diff from old version `0.4.0-20230201063624-4e0463b` to new version `0.4.0-20230203030233-b22bea7`
+is <https://github.com/toeverything/blocksuite/compare/4e0463b...b22bea7>.

scripts/upgrade-blocksuite.sh

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+#!/usr/bin/env bash
+pnpm up "@blocksuite/*" "!@blocksuite/icons" -r -i