feat: add a parser that can be used with clap for all formats except base32 and base64

Refs: #5

@@ -216,0 +287,4 @@
+                Err(anyhow!(e))
+            }
+        }
+    } else if s.starts_with(&Format::Base64.prefix()) {

@@ -216,0 +290,4 @@
+    } else if s.starts_with(&Format::Base64.prefix()) {
+        let e = "parsing of base64 is not yet implemented".to_string();
+        Err(anyhow!(e))
+    } else if s.starts_with(&Format::Base32.prefix()) {

@@ -216,0 +238,4 @@
+/// let args = Args::parse_from(&["", "-a", "0x10"]);
+/// assert_eq!(args.address, 16);
+/// ```
+pub fn numf_parser(s: &str) -> anyhow::Result<NumberType> {

@@ -216,0 +300,4 @@
+            None => s,
+        };
+        match fast32::base64::RFC4648.decode_str(s) {
+            Ok(r) => {

@@ -20,2 +20,3 @@
 fast32 = "1.0.2"
-libpt = { version = "0.5.0", features = ["bintols"]}
+libpt = { version = "0.5.1", features = ["bintols"]}
+num = "0.4.3"

@@ -216,0 +307,4 @@
+        };
+        match fast32::base64::RFC4648.decode_str(s) {
+            Ok(r) => {
+                if r.len() > 16 {