Add Buy and Deposit buttons to the asset details screen

[Douglashdaniel]

Description

We need to add Buy and Deposit buttons to the Asset Details screen.
Only show the buttons if they are supported for the asset.

Steps to Reproduce

Actual result:

Expected result:

Reproduces how often:

Brave version (brave://version info)

Version/Channel Information:

• Can you reproduce this issue with the current release?
• Can you reproduce this issue with the beta channel?
• Can you reproduce this issue with the nightly channel?

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields?
• Does the issue resolve itself when disabling Brave Rewards?
• Is the issue reproducible on the latest version of Chrome?

Miscellaneous Information:

[srirambv]

Verification passed on

Brave	1.46.129 Chromium: 108.0.5359.48 (Official Build) (64-bit)
Revision	18ceeca0d99318e70c00d2e04d88aa55488b5c63-refs/branch-heads/5359@{#854}
OS	Linux

• Verified steps from brave/brave-core#15641
• Verified Buy/Deposit buttons on asset details screen is shown
• Verified clicking Buy from asset details screen loads Fund Wallet page
• Verified clicking Deposit from asset details screen loads Deposit Funds page

26213.mp4

---

Verification passed on

Brave	1.46.129 Chromium: 108.0.5359.48 (Official Build) (64-bit)
Revision	18ceeca0d99318e70c00d2e04d88aa55488b5c63-refs/branch-heads/5359@{#854}
OS	Windows 11 Version 22H2 (Build 22621.755)

• Verified steps from brave/brave-core#15641
• Verified Buy/Deposit buttons on asset details screen is shown
• Verified clicking Buy from asset details screen loads Fund Wallet page
• Verified clicking Deposit from asset details screen loads Deposit Funds page

26213.mp4

---

Verification passed on

Brave	1.46.129 Chromium: 108.0.5359.48 (Official Build) (arm64)
Revision	18ceeca0d99318e70c00d2e04d88aa55488b5c63-refs/branch-heads/5359@{#854}
OS	macOS Version 13.0 (Build 22A380)

• Verified steps from brave/brave-core#15641
• Verified Buy/Deposit buttons on asset details screen is shown
• Verified clicking Buy from asset details screen loads Fund Wallet page
• Verified clicking Deposit from asset details screen loads Deposit Funds page

26213.mov