chore: add pdf-reader gem for pdf file parsing

Gemfile

@@ -106,3 +106,6 @@ gem 'redis'
 
 # shellwords for safely escaping strings
 gem 'shellwords'
+
+# PDF parsing
+gem 'pdf-reader'

Gemfile.lock

@@ -1,6 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    Ascii85 (1.1.0)
     actioncable (7.1.2)
       actionpack (= 7.1.2)
       activesupport (= 7.1.2)
@@ -78,6 +79,7 @@ GEM
     addressable (2.8.6)
       public_suffix (>= 2.0.2, < 6.0)
     aes_key_wrap (1.1.0)
+    afm (0.2.2)
     amq-protocol (2.3.2)
     ast (2.4.2)
     backport (1.2.0)
@@ -190,6 +192,7 @@ GEM
     grape-swagger-rails (0.4.0)
       railties (>= 6.0.6.1)
     hashdiff (1.1.0)
+    hashery (2.1.2)
     hirb (0.7.3)
     http-accept (1.7.0)
     http-cookie (1.0.5)
@@ -269,6 +272,12 @@ GEM
     parser (3.2.2.4)
       ast (~> 2.4.1)
       racc
+    pdf-reader (2.12.0)
+      Ascii85 (~> 1.0)
+      afm (~> 0.2.1)
+      hashery (~> 2.0)
+      ruby-rc4
+      ttfunk
     pkg-config (1.5.6)
     prism (0.24.0)
     psych (5.1.2)
@@ -395,6 +404,7 @@ GEM
       sorbet-runtime (>= 0.5.10782)
     ruby-ole (1.2.12.2)
     ruby-progressbar (1.13.0)
+    ruby-rc4 (0.1.5)
     ruby-saml (1.13.0)
       nokogiri (>= 1.10.5)
       rexml
@@ -454,6 +464,8 @@ GEM
     thor (1.3.0)
     tilt (2.3.0)
     timeout (0.4.1)
+    ttfunk (1.8.0)
+      bigdecimal (~> 3.1)
     typhoeus (1.4.1)
       ethon (>= 0.9.0)
     tzinfo (2.0.6)
@@ -504,6 +516,7 @@ DEPENDENCIES
   moss_ruby (>= 1.1.4)
   mysql2
   net-smtp
+  pdf-reader
   puma
   rack-cors
   rails (~> 7.0)