feat(pg): add Ubuntu/Debian PostgreSQL installation guide & enhanced SheetJSPG.js type deduc

- Include Ubuntu/Debian installation instructions
- Improve PostgreSQL table creation with better type detection
- Enhance date format detection and parsing

Breaking Changes:
- Replace `aoo_to_pg_table` to `sheet_to_pg_table` & now it takes worksheet object instead of array of arrays
- Changed type detection algorithm may produce column types

.gitignore

@@ -4,4 +4,4 @@ node_modules/
 .log
 :.prettierrc
 SheetJSPGExport.xlsx
-pres.numbers
+pres.numbers

SheetJSPG.js

@@ -1,12 +1,12 @@
 const pg = require("pg"), format = require("pg-format");
 const XLSX = require("xlsx");
 const opts = {
-  database:"SheetJSPG",
-  host: "127.0.0.1", // localhost
-  port: 5432,
-  user: "postgres",
-  password: "7509"
-};
+    database:"SheetJSPG",
+    host: "127.0.0.1", // localhost
+    port: 5432,
+    user: "postgres",
+    password: "7509"
+  };
 
 function deduceType(cells) {
     if (!cells || cells.length === 0) return 'text';
@@ -170,4 +170,4 @@ try {
   /* disconnect */
   await client.end();
 }
-})();
+})();