move main.go to repository root

Signed-off-by: Balaji J <j.balaji2468@gmail.com>

Author: balajz

README.md

@@ -106,7 +106,7 @@ docker run -it --rm ghcr.io/balajz/pgxcli:v0.3.0 postgres://user:pass@host:5432/
 #### Go Install
 If you have Go installed, you can install directly:
 ```bash
-go install github.com/balajz/pgxcli/cmd/pgxcli@latest
+go install github.com/balajz/pgxcli@latest
 ```
 
 For more details, see the [Installation Guide][install-ref].

docs/docs/guides/getting-started.mdx

@@ -74,7 +74,7 @@ Pick your operating system or preferred installation method:
     Make sure you have **Go 1.26.4+**.
 
     ```bash
-    go install github.com/balajz/pgxcli/cmd/pgxcli@latest
+    go install github.com/balajz/pgxcli@latest
     ```
   </TabItem>
   <TabItem value="docker" label="Docker">