pages.id/common/*: add Indonesian translations

[reinhart1010]

• The page(s) are in the correct platform directories: common, linux, osx, windows, sunos, android, etc.
• The page(s) have at most 8 examples.
• The page description(s) have links to documentation or a homepage.
• The page(s) follow the content guidelines.
• The page(s) follow the style guide.
• The PR title conforms to the recommended templates.
• Version of the command being documented (if known):

[sebastiaanspeck]

@reinhart1010 the page title should not be translated. Could you please fix/revert this?

[tldr-bot]

Hello! I've noticed something unusual when checking this PR:

• The page pages.id/common/{.md is outdated, based on the command contents itself, compared to the English page.

Is this intended? If so, just ignore this comment. Otherwise, please double-check the commits.

[kbdharun]

Thanks for your contribution. I have some suggestions for this page (this will fix the tldr-bot error, since non-placeholders in commands should be in English).

[kbdharun]

Suggested change

	`echo ${variabel:+variabel telah diatur dan memiliki nilai $variabel}`
	`echo ${variable:+variable is set and contains $variable}`

[kbdharun]

Suggested change

	- Periksa apakah suatu `variabel` telah diatur sebelum mengembalikan sebuah pesan teks:
	- Periksa apakah suatu `variable` telah diatur sebelum mengembalikan sebuah pesan teks:

[kbdharun]

Suggested change

	- Setel sebuah nilai bawaan/default apabila suatu `variabel` belum pernah diatur:
	`echo ${variabel:-default}`
	- Dapatkan panjang nilai suatu `variabel` dalam format karakter/string:
	`echo ${#variabel}`
	- Dapatkan bagian/substring pada string:
	`echo ${variabel:3:7}`
	- Perluas nilai `variabel` secara rekursif:
	`echo ${!variabel}`
	- Ubah semua karakter menjadi huruf kapital:
	`echo ${variabel^^}`
	- Setel sebuah nilai bawaan/default apabila suatu `variable` belum pernah diatur:
	`echo ${variable:-default}`
	- Dapatkan panjang nilai suatu `variable` dalam format karakter/string:
	`echo ${#variable}`
	- Dapatkan bagian/substring pada string:
	`echo ${variable:3:7}`
	- Perluas nilai `variable` secara rekursif:
	`echo ${!variable}`
	- Ubah semua karakter menjadi huruf kapital:
	`echo ${variable^^}`

[sebastiaanspeck]

LGTM, after the suggestions are applied.