Exclude images from published crate (#239)

This commit introduces an explict `include` configuration in the
`Cargo.toml` file of `color-spantrace`. That has the effect that it now
excludes the two example images from the source code uploaded to
crates.io.
The main benifits of this change are:

* It reduces the size of the uploaded tar-ball from 186KB to 12KB, so an
over 90% reduction in size. That will reduce the traffic produced by
this crate at crates.io by over 350GB in a 90 day period based on the
number of downloads listed by crates.io
* It removes a hard to review binary blob from the source code. In
combination with the build script such a blob might enable a future
supply chain attack. By removing the blob it becomes at least harder to
perform a xz-like code injection.

The pictures are only used by the readme. That readme is rendered by
crates.io. To keep the rendering there intact the links to the image
have been replaced by linkes to the image hosted by github. This removes
the need to upload these images to crates.io.

Author: weiznich

color-spantrace/Cargo.toml

@@ -3,6 +3,7 @@ name = "color-spantrace"
 version = "0.2.2"
 description = "A pretty printer for tracing_error::SpanTrace based on color-backtrace"
 documentation = "https://docs.rs/color-spantrace"
+include = ["README.md", "src/**/*.rs", "build.rs", "LICENSE-APACHE", "LICENSE-MIT"]
 
 authors = { workspace = true }
 edition = { workspace = true }

color-spantrace/README.md

@@ -88,11 +88,11 @@ This creates the following output
 
 ### Minimal Format
 
-![minimal format](./pictures/minimal.png)
+![minimal format](https://raw.githubusercontent.com/eyre-rs/eyre/refs/heads/master/color-spantrace/pictures/minimal.png)
 
 ### Full Format
 
-![Full format](./pictures/full.png)
+![Full format](https://raw.githubusercontent.com/eyre-rs/eyre/refs/heads/master/color-spantrace/pictures/full.png)
 
 #### License