FAQ rework, replacing outdated info, better interaction FAQ (#2106)

* FAQ rework, replacing outdated info, better interaction faq

* Update docs/faq/basics/getting-started.md

Co-authored-by: Jared L <48422312+lhjt@users.noreply.github.com>

* Update docs/faq/basics/getting-started.md

Co-authored-by: Jared L <48422312+lhjt@users.noreply.github.com>

* Update docs/faq/int_framework/general.md

Co-authored-by: Jared L <48422312+lhjt@users.noreply.github.com>

* fix TOC reference

Co-authored-by: Jared L <48422312+lhjt@users.noreply.github.com>
Co-authored-by: Quin Lynch <lynchquin@gmail.com>

docs/faq/text_commands/samples/Remainder.cs

@@ -0,0 +1,20 @@
+//	Input: 
+//		!echo Coffee Cake
+
+//	Output:
+//		Coffee Cake
+[Command("echo")]
+public Task EchoRemainderAsync([Remainder]string text) => ReplyAsync(text);  
+
+//	Output:
+//		CommandError.BadArgCount
+[Command("echo-hassle")]
+public Task EchoAsync(string text) => ReplyAsync(text);
+
+//	The message would be seen as having multiple parameters, 
+//	while the method only accepts one. 
+//	Wrapping the message in quotes solves this.
+//	This way, the system knows the entire message is to be parsed as a 
+//	single String.
+//	e.g., 
+//		!echo "Coffee Cake"

docs/faq/text_commands/samples/runmode-cmdattrib.cs

@@ -0,0 +1,7 @@
+[Command("process", RunMode = RunMode.Async)]
+public async Task ProcessAsync(string input)
+{
+	// Does heavy calculation here.
+	await Task.Delay(TimeSpan.FromMinute(1));
+	await ReplyAsync(input);
+}

docs/faq/text_commands/samples/runmode-cmdconfig.cs

@@ -0,0 +1,10 @@
+public class Setup
+{
+	private readonly CommandService _command;
+	
+	public Setup()
+	{
+		var config = new CommandServiceConfig{ DefaultRunMode = RunMode.Async };
+		_command = new CommandService(config);
+	}
+}