* Extract primary channel routes from invidious.cr
Also removes timedtext_video stub since all it does is redirect to the
homepage. However, Invidious's 404 handler already does this.
--
As the template for the channel about page doesn't exist yet, the
behavior for the /channel/:ucid/about endpoint has been changed to be
the same as what's currently present on Invidious
(cherry picked from commit 8fad19d8057d7d22e3de27ebbc88a9978c1df27b)
* Manually extract brand_redirect from 1b569bbc99207cae7c20aa285f42477ae361dd30
This commit manually extracts the brand_redirect function from the
commit mentioned.
However, the redirect to the `.../about` endpoint is removed due to the
fact that it doesn't exist yet.
This commit is also mainly just a bridge for the next few cherry picks from
\#2215
* Update brand_redirect to use youtubei resolve_url
(cherry picked from commit 53335fe7cfdfac392365b7cac447bc7cc6478134)
* Add additional channel endpoints to brand_redirect
(cherry picked from commit 8fc6f3add637dabb09b2034f4d82fc3d039ba15c)
* Add separate handler for /profile endpoint
* Add /channel/:ucid/home route
* Document all channel brand_urls
Cherry picked from ui overhaul branch with a few modifications:
- channel folder is renamed to channels
- parsing for channel home and featured channels are removed due to
lack of infrastructure from other commits
(cherry picked from commit 44d18b8e147b47ad06a54cc6fd08423d9f39074d)
Simple routes have been moved into a single `Misc` file.
Embed routes have been moved into a single `Embed` file.
The preferences route has been renamed to be more consistent with other parts
of the codebase.
The config file can now be specified with `INVIDIOUS_CONFIG_FILE`.
A YAML formatted string can still be passed with `INVIDIOUS_CONFIG`, replacing
the config file.
Additionally all options can now be specified as environment variables.
The syntax for variable names is `INVIDIOUS_` followed by the option name in
upper case. The values are parsed as YAML.
These new env vars only update the provided main configuration, but it is
possible to point the config file at the example config and then use env vars
for all config options:
```
INVIDIOUS_CONFIG_FILE=./config/config.example.yml \
INVIDIOUS_CHANNEL_THREADS=10 \
./invidious
```
The crystal http client maintains a keepalive connection to the other
server which stays alive for some time. This should be closed if the
client instance is not used again to avoid hogging resources
