Add faq page and java version check info (#240)

Co-authored-by: Ollie <[email protected]>

Author: MiniDigger

config/sidebar.paper.ts

@@ -74,6 +74,7 @@ const paper: SidebarsConfig = {
             slug: "/cat/admin/misc",
           },
           items: [
+            "admin/misc/faq",
             "admin/misc/paper-bug-fixes",
           ],
         },

docs/paper/admin/misc/faq.md

@@ -0,0 +1,13 @@
+---
+slug: /faq
+---
+
+# Frequently Asked Questions
+
+## Unsupported Java detected, what do I do?!
+
+Unsupported, early-access, or internal versions of Java are often missing features, have known issues or be straight up broken. 
+As such, we cannot provide support for servers running such versions.
+You should install a supported version of Java as explained [here](/misc/java-install).
+
+If you still wish to continue, knowing that you are on your own and will receive NO support, you can disable the check with a system property, as explained [here](/paper/reference/system-properties#paperignorejavaversion).

docs/paper/admin/reference/system-properties.md

@@ -189,3 +189,8 @@ It also remaps plugin CB calls to remove the version information.
 
 - **default**: `true`
 - **description**: Sets whether to parse comments in YAML files by default.
+
+#### Paper.IgnoreJavaVersion:
+
+- **default**: `false`
+- **description**: Allows you to bypass the Java version check. See [here](/paper/faq#unsupported-java-detected-what-do-i-do) for more info.