minor and major reworks: rename swb to SRU, add a test for pdf parsing

major: rework mail to send mail as plaintext instead of html, preventing the bleed-in of html text

src/logic/csvparser.py

@@ -1,4 +1,5 @@
 import csv
+
 from charset_normalizer import detect
 
 
@@ -19,4 +20,4 @@ def csv_to_list(path: str) -> list[str]:
 if __name__ == "__main__":
     text = csv_to_list("C:/Users/aky547/Desktop/semap/71.csv")
     # remove linebreaks
-    # print(text)
+    # #print(text)