[Rich text editor] Integrate rich text editor library (#1172)

* Integrate rich text editor

* Also increase swapfile size in test CI

Fixes issue where screenshot tests are terminated due to lack of CI
resources.

See https://github.com/actions/runner-images/discussions/7188#discussioncomment-6750749

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Co-authored-by: ElementBot <benoitm+elementbot@element.io>

tools/localazy/config.json

@@ -45,7 +45,7 @@
       ]
     },
     {
-      "name": ":libraries:textcomposer",
+      "name": ":libraries:textcomposer:impl",
       "includeRegex": [
         "rich_text_editor_.*"
       ]