Verified that issue #1067 is resolved and added documentation for load pdf functionality. (#1343)

Issue #1067 about not being able to load pdf files, was verified to be
working with evadb documentation pdf and a new page for loading pdf is
added to the documentation.
<img width="1310" alt="Screenshot 2023-11-07 at 1 33 01 AM"
src="https://github.com/georgia-tech-db/evadb/assets/32676813/af2fa40b-c8c1-4f3d-b93f-98d0bf278a5b">

Co-authored-by: Lohith K S <[email protected]>

Author: kslohith

docs/_toc.yml

@@ -45,6 +45,7 @@ parts:
           - file: source/reference/evaql/load_csv
           - file: source/reference/evaql/load_image
           - file: source/reference/evaql/load_video
+          - file: source/reference/evaql/load_pdf
           - file: source/reference/evaql/select
           - file: source/reference/evaql/explain
           - file: source/reference/evaql/show_functions

docs/source/reference/evaql/load_pdf.rst

@@ -0,0 +1,16 @@
+LOAD PDF
+==========
+
+.. _load-pdf:
+
+.. code:: mysql
+
+   LOAD PDF 'test_pdf.pdf' INTO MyPDFs;
+
+PDFs can be directly imported into a table, where the PDF document is segmented into pages and paragraphs.
+Each row in the table corresponds to a paragraph extracted from the PDF, and the resulting table includes columns for ``name`` , ``page``, ``paragraph``, and ``data``.
+
+| ``name`` signifies the title of the uploaded PDF.
+| ``page`` signifies the specific page number from which the data is retrieved.
+| ``paragraph`` signifies the individual paragraph within a page from which the data is extracted.
+| ``data``  refers to the text extracted from the paragraph on the given page.