chore: clippy rules, allow unwrap for consts

* Formatting

clippy.toml

@@ -1 +1,2 @@
 allow-unwrap-in-tests = true
+allow-unwrap-in-consts = true

src/ecss/tm_pus_a.rs

@@ -192,8 +192,7 @@ impl<'stamp> PusTmSecondaryHeader<'stamp> {
             .into());
         }
         let pus_version = PusVersion::try_from(u4::new((buf[0] >> 4) & 0x0F));
-        let pus_version =
-            pus_version.map_err(PusError::VersionNotSupported)?;
+        let pus_version = pus_version.map_err(PusError::VersionNotSupported)?;
         if !matches!(pus_version, PusVersion::PusA) {
             return Err(PusError::VersionNotSupported(pus_version.raw_value()));
         }

src/time/cuc.rs

@@ -866,8 +866,8 @@ impl Add<Duration> for CucTime {
     fn add(self, duration: Duration) -> Self::Output {
         let (new_counter, new_fractional_part) =
             get_time_values_after_duration_addition(&self, duration);
-        // The generated fractional part should always be valid, so its okay to unwrap here.
-        Self::new_with_fractions(new_counter, new_fractional_part).unwrap()
+        Self::new_with_fractions(new_counter, new_fractional_part)
+            .expect("The generated fractional part should always be valid")
     }
 }
 
@@ -877,8 +877,8 @@ impl Add<Duration> for &CucTime {
     fn add(self, duration: Duration) -> Self::Output {
         let (new_counter, new_fractional_part) =
             get_time_values_after_duration_addition(self, duration);
-        // The generated fractional part should always be valid, so its okay to unwrap here.
-        Self::Output::new_with_fractions(new_counter, new_fractional_part).unwrap()
+        Self::Output::new_with_fractions(new_counter, new_fractional_part)
+            .expect("The generated fractional part should always be valid")
     }
 }