Focus room search

According to LorenDB's First Law of Software Development, once a developer has committed or merged a new feature, he will find at least one problem with the implementation.

I realized that I was constructing the room info items with some parameters out of order, which required a rather urgent fix. Furthermore, I fixed the image decoding algorithms in the QDBusArgument operator. Finally, I switched the API version parameter back to QString, since passing it as a QVersionNumber would create a problem for non-Qt API users.

On the general improvements side of things, I added some handy wrappers for D-Bus calls so that other devs that copy the NhekoDBusApi files to use for their own applications won't have to go to the effort of making the D-Bus calls themselves.

add Zsh completion

Installs into the default site-wide Zsh directory.

This adds functionality for viewing joined rooms and activating rooms.

Currently translated at 90.0% (632 of 702 strings)

Co-authored-by: Aminda Suomalainen <suomalainen+git@mikaela.info>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/fi/
Translation: Nheko/nheko

Currently translated at 90.0% (632 of 702 strings)

Co-authored-by: Aminda Suomalainen <suomalainen+git@mikaela.info>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/fi/
Translation: Nheko/nheko

fixes #136

They hurt more than they are helping

implements MSC3700

see https://github.com/matrix-org/matrix-spec-proposals/pull/3700

Currently translated at 89.8% (631 of 702 strings)

Co-authored-by: Aminda Suomalainen <suomalainen+git@mikaela.info>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/fi/
Translation: Nheko/nheko

Currently translated at 89.3% (627 of 702 strings)

Co-authored-by: Aminda Suomalainen <suomalainen+git@mikaela.info>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/fi/
Translation: Nheko/nheko

Close current room on Ctrl+W

Don't treat a space as a direct chat

Fix room alias issue (#354)