added a perfectly working calendar app in apps section Closes#18

[khushi0704]

Issue : add a calendar app
status : solved this issue , I have added a feature of Calendar app in the apps sections of MarvellOS .
Upon Clicking on the calendar button , the user has to type the year whose calendar he/she wants to look at and then simple he'll be directed to the next window which displays calendar for the particular year the user has input.
for user flexibility , I have added home button in each window of calendar screens so it makes it easier for the user to switch back to the apps section easily . Here is a sample view :

[akshgpt7]

This looks really good, just that the idea behind the app is a bit different: Instead of the user entering an year to go to, the app will show the current month's calendar, and will have Forward and Back buttons to move months. You should also make a dropdown to select an year, that'll take you to January of that month.
(So, at a time, the screen will just have one month's calendar)

[akshgpt7]

Also, can you add one of these keywords to your PR description, and link the relevant issue.
(This will close the issue automatically once this PR is merged)

[khushi0704]

Also, can you add one of these keywords to your PR description, and link the relevant issue.
(This will close the issue automatically once this PR is merged)

[khushi0704]

Also, can you add one of these keywords to your PR description, and link the relevant issue.
(This will close the issue automatically once this PR is merged)

[khushi0704]

Also, can you add one of these keywords to your PR description, and link the relevant issue.
(This will close the issue automatically once this PR is merged)

so you want me to work on this and then merge again?

[khushi0704]

as for now , I would request you to merge this pull request . we can open an issue for enchancing the calendar window

[khushi0704]

This looks really good, just that the idea behind the app is a bit different: Instead of the user entering an year to go to, the app will show the current month's calendar, and will have Forward and Back buttons to move months. You should also make a dropdown to select an year, that'll take you to January of that month.
(So, at a time, the screen will just have one month's calendar)

okay then I'll do that and merge

[akshgpt7]

@khushi0704 You need not do everything from scratch, just edit this PR itself.