[meta] Split translation related workflows

1. Sources uploaded anytime the {mobile,auth}/lib/l10n/arb/app_en.arb changes in main.
2. Tuesday morning: Download translations from crowdin.

Step 2 can be done manually by running the workflows, e.g.

    gh workflow run auth-crowdin-push.yml
    gh workflow run mobile-crowdin-push.yml

.github/workflows/auth-crowdin-push.yml

@@ -0,0 +1,31 @@
+name: "Push sources to Crowdin (auth)"
+
+on:
+    push:
+        branches: [main]
+        paths:
+            # Run workflow when auth's intl_en.arb is changed
+            - "auth/lib/l10n/arb/app_en.arb"
+            # Or the workflow itself is changed
+            - ".github/workflows/auth-crowdin.yml"
+
+jobs:
+    push-sources-to-crowdin:
+        runs-on: ubuntu-latest
+
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+
+            - name: Crowdin's action
+              uses: crowdin/github-action@v2
+              with:
+                  base_path: "auth/"
+                  config: "auth/crowdin.yml"
+                  upload_sources: true
+                  upload_translations: false
+                  download_translations: false
+                  project_id: 575169
+              env:
+                  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+                  CROWDIN_PERSONAL_TOKEN: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}

.github/workflows/auth-crowdin-sync.yml

@@ -1,17 +1,10 @@
 name: "Sync Crowdin translations (auth)"
 
 on:
-    push:
-        branches: [main]
-        paths:
-            # Run workflow when auth's intl_en.arb is changed
-            - "mobile/lib/l10n/arb/app_en.arb"
-            # Or the workflow itself is changed
-            - ".github/workflows/auth-crowdin.yml"
     schedule:
         # See: [Note: Run workflow on specific days of the week]
         - cron: "50 1 * * 2"
-    # Also allow manually running the workflow
+    # Also allow manually running the workflow.
     workflow_dispatch:
 
 jobs:

.github/workflows/mobile-crowdin-push.yml

@@ -0,0 +1,31 @@
+name: "Push sources to Crowdin (mobile)"
+
+on:
+    push:
+        branches: [main]
+        paths:
+            # Run workflow when mobiles's intl_en.arb is changed
+            - "mobile/lib/l10n/intl_en.arb"
+            # Or the workflow itself is changed
+            - ".github/workflows/mobile-crowdin.yml"
+
+jobs:
+    push-sources-to-crowdin:
+        runs-on: ubuntu-latest
+
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+
+            - name: Crowdin's action
+              uses: crowdin/github-action@v2
+              with:
+                  base_path: "mobile/"
+                  config: "mobile/crowdin.yml"
+                  upload_sources: true
+                  upload_translations: false
+                  download_translations: false
+                  project_id: 574741
+              env:
+                  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+                  CROWDIN_PERSONAL_TOKEN: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}

.github/workflows/mobile-crowdin-sync.yml

@@ -1,17 +1,10 @@
 name: "Sync Crowdin translations (mobile)"
 
 on:
-    push:
-        branches: [main]
-        paths:
-            # Run workflow when mobiles's intl_en.arb is changed
-            - "mobile/lib/l10n/intl_en.arb"
-            # Or the workflow itself is changed
-            - ".github/workflows/mobile-crowdin.yml"
     schedule:
         # See: [Note: Run workflow on specific days of the week]
         - cron: "40 1 * * 2"
-    # Also allow manually running the workflow
+    # Also allow manually running the workflow.
     workflow_dispatch:
 
 jobs:

.github/workflows/web-crowdin-push-both.yml

@@ -1,6 +1,6 @@
 name: "Push Crowdin translations (web)"
 
-# This is a variant of web-crowdin.yml that uploads the translated strings in
+# This is a variant of web-crowdin-sync.yml that uploads the translated strings in
 # addition to the source strings.
 #
 # This allows us to change the strings in our source code for an automated
@@ -9,11 +9,11 @@ name: "Push Crowdin translations (web)"
 
 on:
     # Trigger manually, or using
-    # `gh workflow run web-crowdin-push.yml --ref <my-branch>`
+    # `gh workflow run web-crowdin-push-both.yml --ref <my-branch>`
     workflow_dispatch:
 
 jobs:
-    push-to-crowdin:
+    push-both-to-crowdin:
         runs-on: ubuntu-latest
 
         steps:

.github/workflows/web-crowdin-sync.yml

@@ -17,7 +17,7 @@ on:
         #
         # See also: [Note: Run workflow every 24 hours]
         - cron: "20 1 * * 2"
-    # Also allow manually running the workflow
+    # Also allow manually running the workflow.
     workflow_dispatch:
 
 jobs: