build: add support for the jekyll vs code development container

Author: YoRyan

.devcontainer/devcontainer.json

@@ -0,0 +1,5 @@
+{
+    "image": "mcr.microsoft.com/vscode/devcontainers/jekyll",
+    "postCreateCommand": "bundle",
+    "forwardPorts": [4000]
+}

.gitattributes

@@ -0,0 +1,3 @@
+* text=auto eol=lf
+*.{cmd,[cC][mM][dD]} text eol=crlf
+*.{bat,[bB][aA][tT]} text eol=crlf

.vscode/launch.json

@@ -0,0 +1,11 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "command": "bundle exec jekyll serve",
+            "name": "Run Jekyll",
+            "request": "launch",
+            "type": "node-terminal"
+        }
+    ]
+}