1137: Adding new intro slides

[bahaaTuffaha]

Short description

Changing and adding new intro slides to look like this here

Proposed changes

• Added textStyle prop to TextButton to let me change text styling.
• Because the new images are common across all apps I added them at a new folder : build-configs/common/assets
• The colors of these new images will change dynamically depending on the theme.(using currentColor)
• I didn't test it on Malte app (my windows can't run it 😓)

Note: not tested on iOS.

Side effects

• components/Pagination.tsx
• components/TextButton.tsx

Testing

• Just clear the app's data and open the app.
• The intros should appear ✨.

Fixes: #1137

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[steffenkleinle]

I love the design, just a few minor comments :) Thank you!
One more thing: Please delete the old assets as they are not needed anymore.

[steffenkleinle]

Sorry, I approved by accident

[steffenkleinle]

I found one other issue: If moving to the last slide, everything jumps down a bit, see video. After that everything stays that way, i.e. it does not jump back up.

screen-20241217-113247.mp4

[steffenkleinle]

* I didn't test it on Malte app (my windows can't run it 😓)

Tested for malte, works fine!

[steffenkleinle]

Tested on android, did not find any issues. Really well done. Please check all open comments and resolve them. Please also check the proposal in #3027.

[steffenkleinle]

Tested on android, nice work! Please squash the commits when merging :)