docs: use jsdeliver for vsix gifs

Author: bd82

packages/vscode-ui5-language-assistant/.vscodeignore

@@ -16,4 +16,7 @@ coverage/**
 .nyc_output/**
 lib/test/**
 test/**
-scripts
+scripts
+
+# Readme gifs (linked via jsdeliver instead of part of vsix).
+resources/readme

packages/vscode-ui5-language-assistant/README.md

@@ -6,7 +6,7 @@ This VS Code extension provides SAPUI5 language editor support.
 
 ### XML Views Auto-Complete/Context-Assist
 
-![](./resources/preview-content-assist.gif)
+![](https://cdn.jsdelivr.net/gh/SAP/ui5-language-assistant@master/packages/vscode-ui5-language-assistant/resources/readme/preview-content-assist.gif)
 
 #### Description
 
@@ -50,7 +50,7 @@ The feature is available in the following:
 
 ### XML View Validations
 
-![](./resources/preview-validations.gif)
+![](https://cdn.jsdelivr.net/gh/SAP/ui5-language-assistant@master/packages/vscode-ui5-language-assistant/resources/readme/preview-validations.gif)
 
 #### Description
 
@@ -80,7 +80,7 @@ and cannot be configured by the end user.
 
 ### XML View Hover Tooltips
 
-![](./resources/preview-hover-tooltips.gif)
+![](https://cdn.jsdelivr.net/gh/SAP/ui5-language-assistant@master/packages/vscode-ui5-language-assistant/resources/readme/preview-hover-tooltips.gif)
 
 #### Description
 
@@ -111,7 +111,7 @@ The feature is available in the following:
 
 #### Preview
 
-![](./resources/preview-manifest-json.gif)
+![](https://cdn.jsdelivr.net/gh/SAP/ui5-language-assistant@master/packages/vscode-ui5-language-assistanhttps://cdn.jsdelivr.net/gh/SAP/ui5-language-assistant@master/packages/vscode-ui5-language-assistant/resources/readme/readme/preview-manifest-json.gif)
 
 #### Description: