Update diagnostic to guide ShellCheck directive usage

Author: skovhus

server/src/__tests__/analyzer.test.ts

@@ -98,9 +98,10 @@ describe('analyze', () => {
         {
           "message": "Source command could not be analyzed: non-constant source not supported.
 
-      Note that enabling the configuration flag "includeAllWorkspaceSymbols"
-      would include all symbols in the workspace regardless of source commands.
-      But be aware that this will lead to false positive suggestions.",
+      Consider adding a ShellCheck directive above this line to fix or ignore this:
+      # shellcheck source=/my-file.sh # specify the file to source
+      # shellcheck source-path=my_script_folder # specify the folder to search in
+      # shellcheck source=/dev/null # to ignore the error",
           "range": {
             "end": {
               "character": 16,

server/src/analyser.ts

@@ -100,9 +100,10 @@ export default class Analyzer {
               sourceCommand.range,
               [
                 `Source command could not be analyzed: ${sourceCommand.error}.\n`,
-                'Note that enabling the configuration flag "includeAllWorkspaceSymbols"',
-                'would include all symbols in the workspace regardless of source commands.',
-                'But be aware that this will lead to false positive suggestions.',
+                'Consider adding a ShellCheck directive above this line to fix or ignore this:',
+                '# shellcheck source=/my-file.sh # specify the file to source',
+                '# shellcheck source-path=my_script_folder # specify the folder to search in',
+                '# shellcheck source=/dev/null # to ignore the error',
               ].join('\n'),
               LSP.DiagnosticSeverity.Information,
               undefined,