commands: fix set option, -n arg for find (pyocd#1370)

* commands: base: add type annotations.

* core: options: type annotations

* utility: cmdline: factor convert_one_session_option() out of convert_session_options()

* commands: values: rewrite 'set option' handler to work after tokenizer changes.

* test: test_util: PYOCD_TEST_BINARY env var

If the board under test doesn't have a test binary, then
get_test_binary_path() will attempt to read the PYOCD_TEST_BINARY
environment variable and use that. If the variable isn't set it raises
a RuntimeError so the failure is immediately clear.

* commands: find: support a -n argument to invert the search result

* docs: command_reference.md: update, add value details

* commands: disasm: rewrite extra help, don't mention capstone

* scripts: generate_command_help.py: value detail output, other improvements

* docs: builtin-targets.md: update with recently added target types.

docs/builtin-targets.md

@@ -176,6 +176,26 @@ title: Built-in targets
     <td>HC32F196</td>
     </tr>
 
+    <tr><td><code>hc32f451xc</code></td>
+    <td>HDSC</td>
+    <td>HC32F451xC</td>
+    </tr>
+
+    <tr><td><code>hc32f451xe</code></td>
+    <td>HDSC</td>
+    <td>HC32F451xE</td>
+    </tr>
+
+    <tr><td><code>hc32f452xc</code></td>
+    <td>HDSC</td>
+    <td>HC32F452xC</td>
+    </tr>
+
+    <tr><td><code>hc32f452xe</code></td>
+    <td>HDSC</td>
+    <td>HC32F452xE</td>
+    </tr>
+
     <tr><td><code>hc32f460xc</code></td>
     <td>HDSC</td>
     <td>HC32F460xC</td>
@@ -236,6 +256,11 @@ title: Built-in targets
     <td>HC32M120</td>
     </tr>
 
+    <tr><td><code>hc32m120x6</code></td>
+    <td>HDSC</td>
+    <td>HC32M120</td>
+    </tr>
+
     <tr><td><code>hc32m423xa</code></td>
     <td>HDSC</td>
     <td>HC32M423xA</td>
@@ -481,6 +506,11 @@ title: Built-in targets
     <td>M263KIAAE</td>
     </tr>
 
+    <tr><td><code>m467hjhae</code></td>
+    <td>Nuvoton</td>
+    <td>M467HJHAE</td>
+    </tr>
+
     <tr><td><code>m487jidae</code></td>
     <td>Nuvoton</td>
     <td>M487JIDAE</td>
@@ -506,6 +536,16 @@ title: Built-in targets
     <td>MAX32630</td>
     </tr>
 
+    <tr><td><code>max32660</code></td>
+    <td>Maxim</td>
+    <td>MAX32660</td>
+    </tr>
+
+    <tr><td><code>max32670</code></td>
+    <td>Maxim</td>
+    <td>MAX32670</td>
+    </tr>
+
     <tr><td><code>mimxrt1010</code></td>
     <td>NXP</td>
     <td>MIMXRT1011xxxxx</td>