feat: create "permissive git diff" parameter

Manage a new argument --permissivediff to add the following parameters to git diff call

[
    '--ignore-all-space',
    '--ignore-blank-lines',
    '--ignore-cr-at-eol',
    '--word-diff-regex',
]
It allows to avoid detecting as a difference the indentation/spaces stuff

messages/delta.js

@@ -11,4 +11,6 @@ module.exports = {
   ignoreDestructiveFlag: 'ignore file to use',
   apiVersionFlag: 'salesforce API version',
   deltaFlag: 'generate delta files in [--output] folder',
+  permissivediffFlag:
+    'allow spaces, blank lines and other indentation stuff to NOT be considered as diff',
 }

src/commands/sgd/source/delta.ts

@@ -45,6 +45,11 @@ export default class SourceDeltaGenerate extends SfdxCommand {
       description: messages.getMessage('sourceFlag'),
       default: CliHelper.SOURCE_DEFAULT_VALUE,
     }),
+    permissivediff: flags.boolean({
+      char: 'P',
+      description: messages.getMessage('permissivediffFlag'),
+      default: false,
+    }),
     output: flags.filepath({
       char: 'o',
       description: messages.getMessage('outputFlag'),
@@ -78,6 +83,7 @@ export default class SourceDeltaGenerate extends SfdxCommand {
         ignoreDestructive: this.flags['ignore-destructive'],
         apiVersion: this.flags['api-version'],
         repo: this.flags.repo,
+        permissivediff: this.flags.permissivediff,
         generateDelta: this.flags['generate-delta'],
       })
       output.warnings = jobResult?.warnings?.map(warning => warning.message)

src/utils/repoGitDiff.js

@@ -13,6 +13,18 @@ const lcSensitivity = {
 }
 
 module.exports = (config, metadata) => {
+  // If --permissivediff argument, allow spaces, blank lines and other indentation stuff to NOT be considered as diff
+  if (config.permissivediff === true) {
+    fullDiffParams.push(
+      ...[
+        '--ignore-all-space',
+        '--ignore-blank-lines',
+        '--ignore-cr-at-eol',
+        '--word-diff-regex',
+      ]
+    )
+  }
+  // Call git diff
   const { stdout: diff } = childProcess.spawnSync(
     'git',
     [...fullDiffParams, config.from, config.to, config.source],