Remove the double empty lines from all source files (#2009)

* Run dos2unix for all source files

* Remove the trail space from all source files

* Remove the double empty lines from all source files

.github/ISSUE_TEMPLATE/bug-report.md

@@ -7,7 +7,7 @@ assignees: ''
 
 ---
 
-<!-- 
+<!--
 IMPORTANT
 Issues that don't use this template will be ignored and closed.
 -->
@@ -18,13 +18,13 @@ Issues that don't use this template will be ignored and closed.
 - [ ] Reproduce the issue in a [Simulator](https://docs.lvgl.io/latest/en/html/get-started/pc-simulator.html)
 
 ### Describe the bug
-<!-- 
-A clear and concise description of what the bug is. 
+<!--
+A clear and concise description of what the bug is.
 -->
 
 ### To Reproduce
 <!--
-Provide a small, independent code sample that can be used to reproduce the issue. 
+Provide a small, independent code sample that can be used to reproduce the issue.
 Ideally this should work in the PC simulator unless the problem is specific to a platform.
 Format the code like this:
 ```c
@@ -33,8 +33,8 @@ your code here
 -->
 
 ### Expected behavior
-<!-- 
-A clear and concise description of what you expected to happen. 
+<!--
+A clear and concise description of what you expected to happen.
 -->
 
 ### Screenshots or video

.github/ISSUE_TEMPLATE/dev-discussion.md

@@ -6,7 +6,7 @@ labels: ''
 assignees: ''
 
 ---
-<!-- 
+<!--
 IMPORTANT
 Issues that don't use this template will be ignored and closed.
 
@@ -14,16 +14,16 @@ Normal Feature requests should go to the Forum: https://forum.lvgl.io/c/feature-
 -->
 
 ### Introcude the problem
-<!-- 
-A clear and concise description of the problem. 
+<!--
+A clear and concise description of the problem.
 -->
 
 ### Examples and cases
-<!-- 
-Mention some examples and cases where the problem or the missing feature is relevant 
+<!--
+Mention some examples and cases where the problem or the missing feature is relevant
 -->
 
 ### Suggested solution
 <!--
-If you already have an idea about the solution share it here 
+If you already have an idea about the solution share it here
 -->

.github/auto-comment.yml

@@ -1,12 +1,12 @@
 # Comment to a new issue.
 pullRequestOpened: |
   Thank you for raising your pull request.
-  
-  To ensure that all licensing criteria is met all repositories of the LVGL project apply a process called DCO (Developer's Certificate of Origin). 
-  
+
+  To ensure that all licensing criteria is met all repositories of the LVGL project apply a process called DCO (Developer's Certificate of Origin).
+
   The text of DCO can be read here: https://developercertificate.org/
   For a more detailed description see the [Documentation](https://docs.lvgl.io/latest/en/html/contributing/index.html#developer-certification-of-origin-dco) site.
-  
+
   By contributing to any repositories of the LVGL project you state that your contribution corresponds with the DCO.
-  
-  No further action is required if your contribution fulfills the DCO. If you are not sure about it feel free to ask us in a comment. 
+
+  No further action is required if your contribution fulfills the DCO. If you are not sure about it feel free to ask us in a comment.

.github/pull_request_template.md

@@ -5,4 +5,4 @@ A clear and concise description of what the bug or new feature is.
 ### Checkpoints
 - [ ] Follow the [styling guide](https://github.com/lvgl/lvgl/blob/master/docs/CODING_STYLE.md)
 - [ ] Update CHANGELOG.md
-- [ ] Update the documentation 
+- [ ] Update the documentation

.github/stale.yml

@@ -7,7 +7,7 @@ exemptLabels:
   - architecture
   - pinned
 # Label to use when marking an issue as stale
-staleLabel: stale 
+staleLabel: stale
 # Comment to post when marking an issue as stale. Set to `false` to disable
 markComment: >
   This issue or pull request has been automatically marked as stale because it has not had

.github/workflows/build_micropython.yml

@@ -37,6 +37,5 @@ jobs:
         echo "import gc,utime;
         utime.sleep(5);
         gc.collect();
-        utime.sleep(5)" | 
+        utime.sleep(5)" |
         ports/unix/micropython -i lib/lv_bindings/examples/advanced_demo.py
-