Declare lifetime in From impl (#3329)

_By submitting this pull request, I confirm that you can use, modify,
copy, and redistribute this contribution, under the terms of your
choice._

Signed-off-by: Daniele Ahmed <ahmeddan@amazon.de>

Author: 82marbag

codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/ServerBuilderGenerator.kt

@@ -443,8 +443,8 @@ class ServerBuilderGenerator(
     private fun renderFromBuilderImpl(writer: RustWriter) {
         writer.rustTemplate(
             """
-            impl #{From}<Builder $lifetime> for #{Structure} $lifetime {
-                fn from(builder: Builder) -> Self {
+            impl$lifetime #{From}<Builder $lifetime> for #{Structure} $lifetime {
+                fn from(builder: Builder$lifetime) -> Self {
                     builder.build()
                 }
             }

codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/ServerBuilderGeneratorWithoutPublicConstrainedTypes.kt

@@ -267,7 +267,7 @@ class ServerBuilderGeneratorWithoutPublicConstrainedTypes(
     private fun renderFromBuilderImpl(writer: RustWriter) {
         writer.rustTemplate(
             """
-            impl #{From}<Builder $lifetime> for #{Structure}$lifetime {
+            impl$lifetime #{From}<Builder $lifetime> for #{Structure}$lifetime {
                 fn from(builder: Builder $lifetime) -> Self {
                     builder.build()
                 }