Implement Raster.astype

[Copilot]

• Add DTypeLike to TYPE_CHECKING imports in raster.py
• Implement Raster.astype(dtype) method in raster.py
• Add TestAstype test class in test_raster.py
• Document Raster.astype in README under Cell-wise Operations

Original prompt

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This section details on the original issue you should resolve

<issue_title>Implement Raster.astype</issue_title>
<issue_description>So we can do

slope_raster = slope_raster.astype("float32")

Instead of

slope_raster.arr = slope_raster.arr.astype("float32")

Useful for method chaining. Similar to to_crs and other cleanup methods</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Implement Raster.astype #407

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[nathanjmcdougall]

@copilot please document this new function in the README

[Copilot]

@copilot please document this new function in the README

Added Raster.astype(dtype) to the Cell-wise Operations section of the README in commit 4c3cb01.

[t-t-sonarqube]

Quality Gate passed

Issues

• 0 New Issues
• 0 Fixed Issues
• 0 Accepted Issues

Measures

• 0 Security Hotspots
• 100.00% Coverage (95.00% Estimated after merge)
• 0.00% Duplicated Code (0.00% Estimated after merge)

Project ID: tonkintaylor_rastr_c6820163-843b-45ef-9d15-db4bc95045e9

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