Implement framework for custom modules and out of the box custom modules as well. (#213)

* Create declarative module scaffolding

* Added ram module (WIP)

* Updates to options, styling and more.

* Added function for styling custom modules.

* Added utility functions and cleaned up code

* Type and fn name updates.

* Update module utils to handle absent values.

* Added icon color in style2 that was missing.

* Linted utils.ts

* Add CPU module and update RAM module to use /proc/meminfo.

* Added disk storage module.

* Consolidate code

* Added netstat module and removed elements from systray default ignore list.

* Added keyboard layout module.

* Fix hook types and move module to customModules directory

* Added updates modules.

* Spacing updates

* Added weather module.

* Added power menu and power module in bar. Increased update default interval to 6 ours.

* Updated styling of bar buttons, made power menu label toggleable, etc.

* Consolidate code and add dynamic tooltips based on data being used.

* Make default custom mogules matugen compatible

* Update base theme

* Fix custom module background coloring

* Remove testing opacity.

* Update themes to account for new modules

* Update nix stuff for libgtop (Need someone to test this)

* Update nix

* Update fractions to multiplications

* Move styling in style directory

* Implement a polling framework for variables that can dynamically adjust polling intervals.

* Netstat module updates when interface name is changed.

* Readme update

scss/style/bar/window_title.scss

@@ -11,7 +11,7 @@
   .bar-button-icon.windowtitle {
     border-top-left-radius: $bar-buttons-radius;
     border-bottom-left-radius: $bar-buttons-radius;
-    background: if($bar-buttons-monochrome, $bar-buttons-icon_background, $bar-buttons-windowtitle-icon_background);
+    background: if($bar-buttons-monochrome, $bar-buttons-icon, $bar-buttons-windowtitle-icon_background);
     padding: $bar-buttons-padding_y 0em;
     padding-left: $bar-buttons-padding_x;
     padding-right: $bar-buttons-windowtitle-spacing;