Use a fully static seshat build

[MatMaul]

Signed-off-by: Mathieu Velten mathieuv@matrix.org

Checklist

• Ensure your code works with manual testing
• Linter and other CI checks pass
• Sign-off given on the changes (see CONTRIBUTING.md)

---

Here's what your changelog entry will look like:

✨ Features

• Use a fully static seshat build (#631). Contributed by @MatMaul.

[t3chguy]

This looks like it always builds a static sqlcipher, if that is the case we need to

• Remove docs about SQLCIPHER_STATIC
• Stop using SQLCIPHER_STATIC in CI
• Remove dependency on libsqlcipher0

[MatMaul]

This looks like it always builds a static sqlcipher, if that is the case we need to

* Remove docs about SQLCIPHER_STATIC

* Stop using SQLCIPHER_STATIC in CI

* Remove dependency on libsqlcipher0

Will do, thanks for the early review. I am mainly using this PR as a way to validate the build on all platforms for now, I forgot to put a draft at first, sorry for the RR.

[t3chguy]

Under a very basic test I had mostly success:

Windows x64

macOS ARM64

Linux aarch64 system libsqlcipher

Linux aarch64 bundled sqlcipher

debian@debian:~$ element-desktop 
Seshat unexpected error: Error: /opt/Element/resources/app.asar.unpacked/node_modules/matrix-seshat/index.node: undefined symbol: sqlite3_changes64
    at process.func [as dlopen] (node:electron/js2c/asar_bundle:2:1822)
    at Module._extensions..node (node:internal/modules/cjs/loader:1326:18)
    at Object.func [as .node] (node:electron/js2c/asar_bundle:2:2049)
    at Module.load (node:internal/modules/cjs/loader:1096:32)
    at Module._load (node:internal/modules/cjs/loader:937:12)
    at f._load (node:electron/js2c/asar_bundle:2:13330)
    at Module.require (node:internal/modules/cjs/loader:1120:19)
    at require (node:internal/modules/cjs/helpers:103:18)
    at Object.<anonymous> (/opt/Element/resources/app.asar/node_modules/matrix-seshat/index.js:16:22)
    at Module._compile (node:internal/modules/cjs/loader:1241:14) {
  code: 'ERR_DLOPEN_FAILED'
}

[t3chguy]

Looks sane other than docs/native-node-modules.md needing an update