Add Prettier formatting (#1360)

* add prettier

Signed-off-by: Lorenzo Lewis <lorenzo_lewis@icloud.com>

* add prettier script

Signed-off-by: Lorenzo Lewis <lorenzo_lewis@icloud.com>

* add prettier configs

Signed-off-by: Lorenzo Lewis <lorenzo_lewis@icloud.com>

* add git modules to ignore

Signed-off-by: Lorenzo Lewis <lorenzo_lewis@icloud.com>

* ignore formatting autogenerated references

Signed-off-by: Lorenzo Lewis <lorenzo_lewis@icloud.com>

* format

Signed-off-by: Lorenzo Lewis <lorenzo_lewis@icloud.com>

* add format workflow for testing

Signed-off-by: Lorenzo Lewis <lorenzo_lewis@icloud.com>

* set package manager

Signed-off-by: Lorenzo Lewis <lorenzo_lewis@icloud.com>

* valid package manager?

Signed-off-by: Lorenzo Lewis <lorenzo_lewis@icloud.com>

* test applying formatting

Signed-off-by: Lorenzo Lewis <lorenzo_lewis@icloud.com>

* [ci] format

* update action target branch

Signed-off-by: Lorenzo Lewis <lorenzo_lewis@icloud.com>

* line break

Signed-off-by: Lorenzo Lewis <lorenzo_lewis@icloud.com>

---------

Signed-off-by: Lorenzo Lewis <lorenzo_lewis@icloud.com>
Co-authored-by: lorenzolewis <lorenzolewis@users.noreply.github.com>

.prettierrc

@@ -0,0 +1,23 @@
+{
+  "printWidth": 100,
+  "semi": true,
+  "singleQuote": true,
+  "tabWidth": 2,
+  "trailingComma": "es5",
+  "useTabs": true,
+  "plugins": ["prettier-plugin-astro"],
+  "overrides": [
+    {
+      "files": [".*", "*.json", "*.md", "*.toml", "*.yml"],
+      "options": {
+        "useTabs": false
+      }
+    },
+    {
+      "files": ["*.md", "*.mdx"],
+      "options": {
+        "printWidth": 80
+      }
+    }
+  ]
+}