Add some help text

template/template.yaml

@@ -2,10 +2,12 @@ options:
   - !Option
     name: unstable-hal
     display_name: Enable unstable HAL features.
+    help: esp-hal contains many unstable features that are not yet ready for general use. This configuration enables using them.
 
   - !Option
     name: unstable-dependencies
     display_name: Enable unstable dependencies.
+    help: Many dependencies are currently unstable (their latest releases are 0.x verisons). This configuration enables configurations related to these dependencies.
 
   - !Option
     name: alloc
@@ -54,6 +56,7 @@ options:
   - !Option
     name: probe-rs
     display_name: Flashes using `probe-rs` instead of `espflash`.
+    help: espflash uses a serial connection (UART) for programming and logging. probe-rs is a debugger that connects to the chips over JTAG. It can be used to flash and monitor, and it can also be used to interactively debug an application, or run tests on the hardware. Semihosting or RTT-based technologies like defmt-rtt require probe-rs.
 
   - !Category
     name: optional