Nav Menu Upgrades and Minor UX Improvements (#869)

* Converted navigation menu into a dropdown menu
* Moved collapsed side panel menu icons into top row
* Auto refresh when conversation is deleted to update side panel and route back to main page if deletion is on current conversation
* Highlight the current conversation in the side panel
* Dynamic homepage messages with current day and time of day.
* `colorutils` upgraded to have more expansive tailwind color options and dynamic class name generation.
* Converted create agent button alert into shadcn `ToolTip`
* Colored lines and icons for agents in chat window
* Cleaned up border styling in dark mode
* fixed three dot menu in side panel to be more easier to click
* Add the KhojLogo import in the nav menu and use a default user profile icon when not authenticated
* Get rid of custom --box-shadow CSS variable
* Pass the agent metadat through the chat body data in order to style the send button
* Add login to the unauthenticated login view, redirecto to home if conversation history not loaded
* Set a max height for the input text area
* Simplify tailwind class names

---------

Co-authored-by: sabaimran <narmiabas@gmail.com>

src/interface/web/app/automations/automations.module.css

@@ -9,8 +9,23 @@ div.automationCard {
     grid-template-rows: auto 1fr auto;
 }
 
+div.pageLayout {
+    max-width: 60vw;
+    margin: auto;
+    margin-bottom: 2rem;
+}
+
+div.sidePanel {
+    position: fixed;
+    height: 100%;
+}
+
 @media screen and (max-width: 768px) {
     div.automationsLayout {
         grid-template-columns: 1fr;
     }
+
+    div.pageLayout {
+        max-width: 90vw;
+    }
 }