- Create component
	- welcome_jami_layout.xml
- Importing necessary resources files
	- background_welcome_jami light and night
	- background_welcome_jami_main_box
- All these files are using values in:
	- colors.xml (light/night mode)
	- strings.xml
	- dimens.xml
GitLab: #1292

Change-Id: I2ebd4745ed0b399be873cfbc044337124696014e