Feat livestream support (#180)

* experimental livestrea support

* test livestream

* update wait time detection

* update livestream functions

* persist and restore livestreams monitor session

* fan-in logging

* deps update

* added live time display

* livestream monitor prototype

* changed to default logger instead of passing *slog.Logger everywhere

* code refactoring, comments

frontend/src/components/livestream/NoLivestreams.tsx

@@ -0,0 +1,38 @@
+import LiveTvIcon from '@mui/icons-material/LiveTv'
+import { Container, SvgIcon, Typography, styled } from '@mui/material'
+import { useI18n } from '../../hooks/useI18n'
+
+const FlexContainer = styled(Container)({
+  display: 'flex',
+  minWidth: '100%',
+  minHeight: '80vh',
+  alignItems: 'center',
+  justifyContent: 'center',
+  flexDirection: 'column'
+})
+
+const Title = styled(Typography)({
+  display: 'flex',
+  width: '100%',
+  alignItems: 'center',
+  justifyContent: 'center',
+  paddingBottom: '0.5rem'
+})
+
+
+export default function NoLivestreams() {
+  const { i18n } = useI18n()
+
+  return (
+    <FlexContainer>
+      <Title fontWeight={'500'} fontSize={72} color={'gray'}>
+        <SvgIcon sx={{ fontSize: '200px' }}>
+          <LiveTvIcon />
+        </SvgIcon>
+      </Title>
+      <Title fontWeight={'500'} fontSize={36} color={'gray'}>
+        No livestreams monitored
+      </Title>
+    </FlexContainer>
+  )
+}