python: Create requirements.txt files for each "project"

Rather than have a requirements.txt file that's shared between multiple
python projects within U-Boot, create one for each using "pipreqs".

Signed-off-by: Tom Rini <trini@konsulko.com>

tools/binman/requirements.txt

@@ -0,0 +1,5 @@
+importlib_resources==6.5.2
+jsonschema==4.23.0
+pycryptodomex==3.21.0
+pyelftools==0.31
+yamllint==1.35.1

tools/patman/requirements.txt

@@ -0,0 +1,5 @@
+ConfigParser==7.1.0
+importlib_resources==6.5.2
+pygit2==1.13.3
+Requests==2.32.3
+setuptools==75.8.0

tools/u_boot_pylib/requirements.txt

@@ -0,0 +1 @@
+concurrencytest==0.1.2