Add routes and functionality for inventory management, user management, worklogs, and settings

- Created a new Blueprint for main routes in `routes/__init__.py`.
- Implemented inventory listing and item management in `routes/inventory.py`.
- Added user listing and detail views in `routes/user.py`.
- Developed worklog listing and entry views in `routes/worklog.py`.
- Introduced search functionality across inventory, users, and worklogs in `routes/search.py`.
- Established settings management for brands, items, rooms, and functions in `routes/settings.py`.
- Enhanced helper functions for rendering headers and managing data in `routes/helpers.py`.
- Updated index route to display active worklogs and inventory conditions in `routes/index.py`.

routes/worklog.py

@@ -0,0 +1,51 @@
+from flask import request, render_template
+
+from . import main
+from .helpers import worklog_headers, worklog_form_fields
+from .. import db
+from ..models import WorkLog, User, Inventory
+from ..utils.load import eager_load_worklog_relationships, eager_load_user_relationships, eager_load_inventory_relationships
+
+@main.route("/worklog")
+def list_worklog(page=1):
+    page = request.args.get('page', default=1, type=int)
+    query = eager_load_worklog_relationships(db.session.query(WorkLog)) 
+    return render_template(
+        'table.html',
+        header=worklog_headers,
+        rows=[{"id": log.id, "cells": [fn(log) for fn in worklog_headers.values()]} for log in query.all()],
+        title="Work Log",
+        entry_route='worklog_entry'
+    )
+
+@main.route("/worklog/<id>")
+def worklog_entry(id):
+    try:
+        id = int(id)
+    except ValueError:
+        return render_template('error.html', title='Bad ID', message='ID must be an integer.', endpoint='worklog_entry', endpoint_args={'id': -1})
+
+    log = eager_load_worklog_relationships(db.session.query(WorkLog)).filter(WorkLog.id == id).first()
+    user_query = db.session.query(User)
+    users = eager_load_user_relationships(user_query).all()
+    item_query = db.session.query(Inventory)
+    items = eager_load_inventory_relationships(item_query).all()
+
+    if log:
+        title = f'Work Log - Entry #{id}'
+    else:
+        title = "Work Log - Entry Not Found"
+        return render_template(
+            'error.html',
+            title=title,
+            message=f"The work log with ID {id} is not found!"
+        )
+
+    return render_template(
+        "worklog.html", 
+        title=title, 
+        log=log, 
+        users=users, 
+        items=items, 
+        form_fields=worklog_form_fields
+    )