feat: reorganize examples and add signature support to JobBuilder

- Reorganized examples into osiris/, sal/, and utils/ folders
- Moved hardcoded scripts to separate .rhai files
- Added signature() method to JobBuilder for job signing
- Updated OSIRIS context to use block_in_place instead of runtime
- Removed runtime field from OsirisContext
- Added typed save() methods for Note and Event objects
- Updated all examples to use new structure and APIs

examples/sal/scripts/_archive/stdout_test.rhai

@@ -0,0 +1,36 @@
+
+
+// Create a bash script to set up the test environment
+let setup_script = `
+# Configure git to suppress the default branch name warning
+git config --global advice.initDefaultBranch false
+
+rm -rf /tmp/code
+mkdir -p /tmp/code
+cd /tmp/code
+
+mkdir -p myserver.com/myaccount/repogreen
+mkdir -p myserver.com/myaccount/repored
+
+cd myserver.com/myaccount/repogreen
+git init
+echo 'Initial test file' > test.txt
+git add test.txt
+git config --local user.email 'test@example.com'
+git config --local user.name 'Test User'
+git commit -m 'Initial commit'
+
+cd /tmp/code/myserver.com/myaccount/repored
+git init
+echo 'Initial test file' > test2.txt
+git add test2.txt
+git config --local user.email 'test@example.com'
+git config --local user.name 'Test User'
+git commit -m 'Initial commit'
+
+# now we have 2 repos
+
+`;
+
+// Run the setup script
+let result = run(setup_script);