[FEATURE] - Improve Guided Breathing

[shrehs]

Feature Title

Add instruction of box breathing

Problem Statement

There is only a button called guided breathing but does not include instructions.

Proposed Solution

Add Box- breathing instruction to it.

Alternatives Considered

No response

Additional Context

Add number of seconds for 5 cycles of box_breathing

[shrehs]

@Amna-Hassan04 Please assign this to me under GSSOC-Ext and Hacktoberfest