Adding Supporting Files For link and Spell Check

Adding files that will be used by the GitHub Action for Spell and Link checks.

Will add the Github workflow once these files get added.

ts_scripts/markdown_link_check_config.json

@@ -0,0 +1,24 @@
+{
+  "retryOn429": true,
+  "retryCount": 5,
+  "fallbackRetryDelay": "10s",
+  "httpHeaders": [
+    {
+      "urls": [
+        "https://docs.github.com/",
+        "https://help.github.com/"
+      ],
+      "headers": {
+        "Accept-Encoding": "zstd, br, gzip, deflate"
+      }
+    }
+  ],
+  "ignorePatterns": [
+    {
+      "pattern": "^http(s)?://127.0.0.1.*"
+    },
+    {
+      "pattern": "^http(s)?://localhost.*"
+    }
+  ]
+}

ts_scripts/spellcheck.sh

@@ -0,0 +1,20 @@
+# Source: https://github.com/pytorch/torchx/blob/main/scripts/spellcheck.sh
+set -ex
+sudo apt-get install aspell
+
+if [[ -z "$@" ]]; then
+    sources=$(find -name '*.md')
+else
+    sources=$@
+fi
+
+sources_arg=""
+for src in $sources; do
+        sources_arg="${sources_arg} -S $src"
+done
+
+if [ ! "$sources_arg" ]; then
+	echo "No files to spellcheck"
+else
+	pyspelling -c ts_scripts/spellcheck_conf/spellcheck.yaml --name Markdown $sources_arg
+fi

ts_scripts/spellcheck_conf/spellcheck.yaml

@@ -0,0 +1,22 @@
+matrix:
+- name: Markdown
+  apsell:
+    lang: en
+    d: en_US
+  dictionary:
+    wordlists:
+    - ts_scripts/spellcheck_conf/wordlist.txt
+    output: ts_scripts/spellcheck_conf/wordlist.dic
+    encoding: utf-8
+  pipeline:
+  - pyspelling.filters.context:
+      context_visible_first: true
+      delimiters:
+      - open: '(?s)^ *(?P<open>`{3,})[a-z0-9]*?$'
+        close: '^(?P=open)$'
+      - open: ''
+        content: 'https?://[-a-zA-Z0-9.]+?\.[a-z]{2,6}[-?=&%.0-9a-zA-Z/_#]*'
+        close: ''
+  - pyspelling.filters.markdown:
+      markdown_extensions:
+      - markdown.extensions.extra: