Refactored Bash script functions to improve readability, consistency,…

… and error handling.

Changes include:
- Added docs to common.sh
- Improved comments for better understanding.
- Updated get_latest_version function to only get numeric folders for better directory parsing and version retrieval.
- Modified update_version: adjusted sed commands for functionallity across MacOS and GNU/Linux platforms.
- Added explicit output markers to differentiate function-specific outputs for clarity.
- Modified pull_versioned_docs function to use local variable for get_latest_version output.

Established structured folders for customized styling and overrides within the MkDocs Material project.

Changes include:

- Set up MkDocs for project homepage
- Set up configuration file (mkdocs.yml) for new palette
- Set up theme and basic styling
- Prepare homepage override template
- Create clone of current site: https://iceberg.apache.org/
- Update site wide styling.

Addressed Homepage Issues: Fixed Image Height, Updated Logo, Enhanced Menu Functionality (#7)

Set fixed/max height for main background image at top for wider resolutions
Replaced Iceberg Icon with Full logo, added text equivalent in alt text and title attribute
Fixed non-functional responsive menu
Restored visibility of icons on the front page

---------

Co-authored-by: Brian Olsen <[email protected]>

.gitignore

@@ -24,7 +24,9 @@ gradle/wrapper/gradle-wrapper.jar
 lib/
 
 # web site build
-site/site
+site/site/
+site/docs/docs/
+site/docs/javadoc/
 
 # benchmark output
 spark/v3.3/spark/benchmark/*
@@ -62,4 +64,3 @@ metastore_db/
 # Spark/metastore files
 spark-warehouse/
 derby.log
-