Optimize UI performance by calculating frame collection statistics
dynamically. Rather than repeatedly traversing each frame, we now update
the stats upon adding or removing frames. This change mitigates the
significant overhead caused by constantly accessing frame data protected
by RwLock.

This update modifies the data containers used for storing frames to
adopt binary tree structures. As a result, all frames are sorted at the
time of insertion, eliminating the need for subsequent sorting during
vector collection.

Moreover, instead of returning vectors, the binary tree structure
enables iteration over elements in a sorted order, providing iterators
rather than vectors. This functionality gives the API caller the
flexibility to either clone frames or simply inspect them in an
efficient manner.

This commit consolidates the packed and unpacked data from frame_data
into a single enum. The goal of this change is to minimize the number of
locks required when retrieving information about a frame.

Previously, the process of reading the packing information for stats
required four separate locks:
 1. One to check 'has_unpacked'
 2. Another to verify 'has_unpacked' within 'unpacked_size'
 3. One to retrieve 'unpacked_size'
 4. And finally, one to retrieve 'packed_size'

With this optimization, the lock count is reduced to a single one,
achieved through invoking the 'packing_info' function.