Work leading up to and including Day 4.

- Initial window bits
- Preliminary Nav sidebar
- Expanders
- Koto Button to reduce code duplication
- Started work on indexer

com.github.joshstrobl.koto.json

@@ -0,0 +1,37 @@
+{
+    "app-id" : "com.github.joshstrobl.koto",
+    "runtime" : "org.gnome.Platform",
+    "runtime-version" : "3.38",
+    "sdk" : "org.gnome.Sdk",
+    "command" : "com.github.joshstrobl.koto",
+    "finish-args" : [
+        "--share=network",
+        "--share=ipc",
+        "--socket=fallback-x11",
+        "--socket=wayland"
+    ],
+    "cleanup" : [
+        "/include",
+        "/lib/pkgconfig",
+        "/man",
+        "/share/doc",
+        "/share/gtk-doc",
+        "/share/man",
+        "/share/pkgconfig",
+        "*.la",
+        "*.a"
+    ],
+    "modules" : [
+        {
+            "name" : "koto",
+            "builddir" : true,
+            "buildsystem" : "meson",
+            "sources" : [
+                {
+                    "type" : "git",
+                    "url" : "file:///home/joshua/Code/Personal/Koto"
+                }
+            ]
+        }
+    ]
+}