Re-add GitHub issues config from old docs repo

Signed-off-by: Julius Volz <julius.volz@gmail.com>

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,9 @@
+blank_issues_enabled: true
+contact_links:
+  - name: Prometheus Community Support
+    url: https://prometheus.io/community/
+    about: If you need help or support, please request help here.
+  - name: Commercial Support & Training
+    url: https://prometheus.io/support-training/
+    about: If you want commercial support or training, vendors are listed here.
+  - name: Blank issue template

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,7 @@
+<!--
+    Please sign CNCF's Developer Certificate of Origin and sign-off your commits by adding the -s / --sign-off flag to `git commit`
+
+    More information on both of those can be found at https://github.com/apps/dco
+
+    If you are proposing a new integration, exporter, or client library, please include representative sample output.
+ -->

src/components/ThemeSelector.tsx

@@ -1,9 +1,19 @@
-import { useMantineColorScheme, rem, ActionIcon } from "@mantine/core";
+"use client";
+
+import {
+  rem,
+  ActionIcon,
+  useComputedColorScheme,
+  useMantineColorScheme,
+} from "@mantine/core";
 import { IconBrightnessFilled, IconSun, IconMoon } from "@tabler/icons-react";
 import { FC } from "react";
 
 export const ThemeSelector: FC = () => {
-  const { colorScheme, setColorScheme } = useMantineColorScheme();
+  const { setColorScheme } = useMantineColorScheme();
+  const computedColorScheme = useComputedColorScheme("light", {
+    getInitialValueInEffect: true,
+  });
   const iconProps = {
     style: { width: rem(20), height: rem(20), display: "block" },
     stroke: 1.5,
@@ -14,36 +24,36 @@ export const ThemeSelector: FC = () => {
       color="gray"
       variant="subtle"
       title={`Switch to ${
-        colorScheme === "light"
+        computedColorScheme === "light"
           ? "dark"
-          : colorScheme === "dark"
+          : computedColorScheme === "dark"
           ? "browser-preferred"
           : "light"
       } theme`}
       aria-label={`Switch to ${
-        colorScheme === "light"
+        computedColorScheme === "light"
           ? "dark"
-          : colorScheme === "dark"
+          : computedColorScheme === "dark"
           ? "browser-preferred"
           : "light"
       } theme`}
       size={32}
       onClick={() =>
         setColorScheme(
-          colorScheme === "light"
+          computedColorScheme === "light"
             ? "dark"
-            : colorScheme === "dark"
+            : computedColorScheme === "dark"
             ? "auto"
             : "light"
         )
       }
     >
-      {colorScheme === "light" ? (
-        <IconSun suppressHydrationWarning {...iconProps} />
-      ) : colorScheme === "dark" ? (
-        <IconMoon suppressHydrationWarning {...iconProps} />
+      {computedColorScheme === "light" ? (
+        <IconSun {...iconProps} />
+      ) : computedColorScheme === "dark" ? (
+        <IconMoon {...iconProps} />
       ) : (
-        <IconBrightnessFilled suppressHydrationWarning {...iconProps} />
+        <IconBrightnessFilled {...iconProps} />
       )}
     </ActionIcon>
   );