This commit introduces a new sub-command `memparse` for analyzing
memory pages of processes. Using `memparse` without parameters will
display an overview of memory size of each process inside a container
checkpoint.

Signed-off-by: Kouame Behouba Manasse <behouba@gmail.com>

This commit extends `memparse` sub-command with the ability to display
the content of process memory pages content in a hexdump-like format when
the `--pid` flag is provided. Additionally, the output can be written to a
file using the `--output` flag.

Signed-off-by: Kouame Behouba Manasse <behouba@gmail.com>

Signed-off-by: Kouame Behouba Manasse <behouba@gmail.com>

This commit adds a new section to the README.md file that provides
an example of how to use the memparse sub-command.

Signed-off-by: Kouame Behouba Manasse <behouba@gmail.com>