feat: Adding self-extracting file as an optional feature

.gitattributes

@@ -1,2 +1,5 @@
 # GitHub syntax highlighting
 pixi.lock linguist-language=YAML
+
+src/header.ps1 text eol=crlf
+src/header.sh text eol=lf

.gitignore

@@ -120,8 +120,8 @@ env/
 environment.yml
 environment
 environment.tar
-environment.tar.zst
-environment.tar.zstd
+environment.sh
+environment.ps1
 pixi-pack.json
 unpack/
 

.pre-commit-config.yaml

@@ -52,3 +52,9 @@ repos:
         entry: pixi run -e lint taplo format
         language: system
         types: [toml]
+      # shellcheck
+      - id: shellcheck
+        name: shellcheck
+        entry: pixi run -e lint shellcheck
+        language: system
+        types: [shell]

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "pixi-pack"
 description = "A command line tool to pack and unpack conda environments for easy sharing"
-version = "0.2.2"
+version = "0.3.0"
 edition = "2021"
 
 [features]
@@ -56,6 +56,7 @@ url = "2.5.3"
 fxhash = "0.2.1"
 tempfile = "3.13.0"
 walkdir = "2.5.0"
+base64 = "0.22.1"
 
 [dev-dependencies]
 async-std = "1.13.0"