nodejs: lazy per-backend libsimplex download (#7543)

* ci: drop dlltool from nodejs libs release

* nodejs: download libsimplex into the user cache

* nodejs: load libsimplex at runtime per backend

* support bot: select db backend with --db

* python: match backend switch error text

* nodejs: download prebuilt add-on at runtime

* ci: build nodejs add-on for libs release

* calculator bot: load libs and add-on in image

* support bot: document add-on override

* nodejs: keep worker test output free of colors

* nodejs: verify sha-256 of downloaded assets

* python: pin core libs release with sha-256

* ci: add packages release script

* ci: release nodejs add-on and open release PR

* ci: publish packages after release PR

* nodejs: keep npm from building the add-on

* calculator bot: build the add-on in the image

* ci: merge package release workflows

* ci: open release PR when publishing fails

* ci: build the add-on with node-addon-api only

* ci: skip publishing in a called packages workflow

* ci: update package release actions to Node 24

* nodejs: fix receive test timeout

* ci: test packages on pull requests

* nodejs: reuse the database in the close stress test

* ci: keep failed package tests from hanging

* ci: skip preset server tests

* ci: plan package builds from the changes

* ci: test packages with a given libsimplex

* ci: test packages with libsimplex of core changes

packages/simplex-chat-nodejs/docs/core.DBMigrationError.Interface.InvalidConfirmation.md

@@ -6,7 +6,7 @@
 
 # Interface: InvalidConfirmation
 
-Defined in: [src/core.ts:139](../src/core.ts#L139)
+Defined in: [src/core.ts:161](../src/core.ts#L161)
 
 ## Extends
 
@@ -18,7 +18,7 @@ Defined in: [src/core.ts:139](../src/core.ts#L139)
 
 > **type**: `"invalidConfirmation"`
 
-Defined in: [src/core.ts:140](../src/core.ts#L140)
+Defined in: [src/core.ts:162](../src/core.ts#L162)
 
 #### Overrides